I'm running 35's with a 2.5" AEV lift with an auto transmission. 37's would necessitate re-gearing. With the 2.5, I have plenty of break over angle. I also saw almost no loss of fuel economy and it still gets into 8th gear. As for trails? My brother had a 2" lift and 35's and took the toughest trails in Moab. Yeah, he occasionally rubbed skid plates, but he had no issues and breakover was really never a problem. The main skid plate he rubbed was a hitch skid. The departure angle was the most limiting factor, but that skid plate did the job, so I have one on my Jeep. I'm on stock rims with 35x12.5x17 tires and they do just fine and wear just fine. And the heavier 37's put more wear on the drive train, over time. However, my next set will be 11.5" wide, as you suggested. I've had pizza cutters on my Wrangler and I feel they get better traction in most off road conditions than wider tires. Thanks for the video! Great information and advice for folks. I just think 35's and a 2" or 2.5" lift gets you on those hard trails with no problem.
We’ve debated this many times and it always comes down to the cost beyond just the tire. We added the full skid system from metalcloak and so far that has been a life saver. The cost of that would have been well worth it even with taller tires and taller lift. To be honest it’s a heavy tire to change on a trail but I would hate to struggle with the weight of anything bigger!
Based on one of your previous videos I equipped my 22 Rubicon Gladiator with a set of 35x12.5x17 Toyo Open Country ATIIIs (load range C) on Method 703s with 5.78" backspacing. This combination is actually lighter than my factory wheels with Falken ATs. Gas mileage stayed the same (with 4.10s) and actually improved with 4.88s. Debating Nitto 37x11.5x17 Recon Grapplers for my next set.
I have the 37x12.5 KO2s on stock Mojave wheels. There is a claim the they weigh less than other 37s- and it's true. The specs claim the tire is 36.5 diam new, but when I adjusted the computer, I did a courtesy check and found them to be 35.5 diam being like the best of both worlds, I decided not to complain (other than the fact that the techs that installed them programed the truck to 37 diam.- which made me think I was getting over 20 mpg) Other factors in th change- 2.5 lift and 1.25 spacers in front only
My personal experience is that a gladiator on 37s with a 3.5" lift and f&r lockers is the best combination of off-road capability yet still road friendly and can still haul stuff as designed while getting decent mpg. I have this setup and have wheeled the Rubicon, other local 6-7 rated difficulty trails, flogged it at the Oregon dunes, and wheeled it in deep snow. Has yet to strand me. Truck gets 16mpg on the highway, hauls dirt bikes in the bed regularly, and is still comfortable to drive. P.s. If you ever get a chance, you should try the new kenda klever mt2 tires. They have been phenomenal in all the above conditions and walked up obstacles on the 'con that other jeeps with nittos were spinning on.
Diesel gladiator here. I went with BFG 37 since it's not actually true to size. Bigger than 35, not exactly 37, lighter and fits a full size spare. Transmission still runs through all the gears.
@@michaelquatrano6189 yes it can. I went with an option AEV has for calibration because I didn't have a tazer at the time, but I'm sure the tazer can do the trick as well.
For anyone who will be doing serious offroading and not building a Jeep for the malls, just go with the 37s! I went with the EVO 4.5" lift and re-geared to 4.88 on my JKU Rubi and am running Toyo Open Country MT 37x12.5 and it is fantastic! I thought about 35s and fuel mileage but at the end of the day, I didn't want to go to the trouble of doing a lift for 35" tires and then decide that I want to run 37s afterall and having to do this whole exercise twice! I went directly to 37s and have zero regrets!
I usually say "meh" on these and disagree on so much but you hit it all perfectly and even hinted at lighter tires for normal all around. I have tried to help so many and they end up miserable thinking I have no clue because they can't think clearly when getting the bug. I will have them all watch this.
Great video, addressed all the questions and hesitations I had. Just bought a JT Maxtow, wanted to upgrade but not have to make major changes to gears, etc. This convinced me to stick to 35's, even though I love the look of 37's.
37x12.5 KO2s measure in at 35.5 diam. With that gives a good compromise. That with a 2.5 lift and a method beadgrip wheels makes a perfect Overlander/point and excelerate combination... a real go anywhere jeep with a little spare change left in your pocket.
Thanks for the comparison of 35s v 37s. I have been on the fence about which way to go. I just installed a Accuair system and need to upgrade wheels and tires. I have been thinking about the 37s. I just do moderate weekend wheeling. With the air suspension I can lower down for highway driving and get back some MPG. As long as the rest of the stock drive line can hold up to 37s I can replace gears later if needed.
In most cases the skinnier tire actually lays down more contact patch than the wider tire. They break down sooner, easier, and more thoroughly than the wider 12.5"
No clue what I'm talking about here but I would assume at a reasonable tire pressure and sidewall (and properly sized wheel) that the 12.5 would have a larger contact patch almost always? And let's be honest the wider tires look better haha
@@trashbandit2449 Contact patch when aired down depends a lot on the tire construction. BFG KO2/KM3 flex so well aired down that the differences are minimal between tire widths, but many popular off road tires do provide a wider contact patch with the more narrow tire versus the same tire in a wider option. There's a guy here on YT who did some pretty thorough testing to show this.
I have the extreme recon package rims and tires 35s 12.5 on my altitude gladiator no mods and ran it like that now I just did a falcon shocks with 4inch ready lift kit and jks swaybar disconnect upgrade looks really good
2020 Gladiator sport here with 37s on 488s with flat fenders. I work on a landfill and I'm off road a lot, nothing extreme mostly because I'm too old. Nobody tailgates me in the rain because of my four rooster tails 😅
I have 38’s Nitto Trail Grappler with Clayton 3.5” Overland on my Gladiator Rubicon. I have to lift the spare into the bed which sucks at my age of 51, but I like the 38s.
[7/3 6:04 p. m.] +52 984 118 2021: Disculpas Hermanos no podré asistir me salio un contratiempo. Nos vemos en la próxima. Pasenla Super. [7/3 6:21 p. m.] +52 998 231 5635: Hermanos ya está listo todo para recibirlos
I have Gladiator Rubicon Launch edition. Replaced the oem with the 35. Almost went with the 37 but wanted to stay with the OEM rims. Recently I was so tempted to go with 37 next time around but glad I found your video! I am gonna stay put at 35! Thank you!🙏
Dam. This video you produced is so informative. A lot of time, money, energy, and knowledge went into this UA-cam viewing.. Went down this road with my diesel wrangler, and gladiator. Good job.amazing video
@@DrivingLine Mr. Ali quick question would you know why my rear axle is off centered about 4 and 1/2 inches to the right ? It looks ridiculous to me but the thing drive straight and has no problems
That’s a big offset. The track bar is what determines the axle placement side to side. Either you need an adjustable one and/or there is an issue with the track bar bracket. If you take it to a good alignment shop, they can give you the exact degrees and measurements that your tracking is off front and rear. That’s what I would do.
@@DrivingLine if the track bar is the issue would it stand out immensely that it was bent or something? Because it looks dead straight and then track bar brackets look straight too. But the rear Clayton off road springs are both pitched to the right. It’s just so weird to me because I would think that would make it crab walk but it’s driving dead straight
It might not be super obvious because the track bars have a few bends in them. If you have the high clearance track bar that works with the larger spare tire, that one would be even more challenging to see if it was bent. The track bar bracket, however should be pretty obvious if there is an issue there.
Good video. I am in the process of doing this right now. I am leaning more toward 37s, maybe 38s for my gladiator rubicon. I'm going to do a terra flex 3inch suspension first, then tires. I do have plans to go to a 5.13 gears as well.
Hey Ali great detailed video as usual! You’re so pro , I learned a lot from your experience! I just installed 37 Nitto Grapplers on my 392 ,I should I already have wheel-spacers to avoid any rubbing on the control Arms no significant issue driving as always , no off roads for me it’s daily driving and simple camping trails , any suggestions I so appreciate you thx!
I run a 38.13.50.17 on KMC grenades 17x9 3.5bs -38 offset aired down 7 psi in snow with a light setup it darn near floats where 3/4 1/2 tons trucks get stuck also I n run 5:13 Dana spicers and definitely upgrade those balljoints people!
Ali, I literally just picked up a Rubicon Gladiator, but I have the manual transmission. Thoughts? Also, I’ve been keeping an eye on you since the red Ranger you had years ago. You’re a real OG, dude.
Thanks! I actually just saw my old Ranger a few weeks ago. I sold it to a friend of mine. I like the manual, you just tend to need a little bit more differential gearing whenever you’re moving up tire size. So, 4.10 might feel a little less powerful with your setup on a 35 over a Gladiator that has the eight speed automatic.
First of all, forgive me if my spelling is not very correct, I am French 😅! I ride a Mojave and am considering upgrading to bigger tires. My use is mainly travel, hunting, overlanding and a little off-roading but nothing extreme. I already have the AEV borah rims and was ready to buy BF KO2 35 12.5 x 17, but after watching your video I will certainly opt for 37'' I love NITTO tires but difficult to find in Europe and make them come double the price between taxes, customs duties and transport. So I'm going to stick with BF KO2s. I would also like to be able to drive with peace of mind by improving what is necessary to have a reliable unit. My question is: is the Specer Lift 2'' AEV sufficient for my use and what gear kit would you recommend (there are far too many references on the market) and in France it is very difficult to find someone who will guide me. I can't afford to make a mistake in my choice, I will have to bring these parts from the USA. Thank you in advance and congratulations on your channel. always interesting content
Dammit, the 37’s mostly only come in 12.5“ I wish ko3 would eventually come in an 11 1/2 inch width but they won’t show that on their future list. The MPG difference is huge between 35 and 37 and I want to keep at least 11 1/2 inch width and you only one is the needle Ridge grappler but they also waste 71 pounds they do a 35 x 11 1/2 K03 BFG coming up in the future. I really would like to run 37 but the weight and MPG’s and the width is an issue. After watching a video on slightly narrower tires, being better then wider it also makes me want it
Great video, very pro! Thanks for that. I bough a JT Rubicon 2023 with almost cero miles in it and already has 37s. Would you please suggest a kit to make the proper re gearing (5:13s I guess would be the best for performance) and odometer adjustment?
A 5.13 is a great ratio for a 37. You can also go 4.88, but it won’t hold overdrive gears as well on the interstate. The only advantage of 4.88 is that if you frequently do cruising speeds below 60 mph, the RPMs will be lower, which means you’ll get slightly better fuel economy. I went with 4.88, and if I had to do it again, I would’ve gone 5.13. All you need is a Tazer JL mini from Z automotive to recalibrate for the gear change tire size.
@@DrivingLine Thank you so much for your prompt response. I´ll go with the 5.13 then. Any suggestion on which and where to purchase that 5.13 re gear set?
I’ve had great luck with gear sets from Nitro gear and axle. You can buy them directly from them. However, it’s sometimes better to order them through whatever shop is going to install them for you. That way if there is an issue, the shop can deal with it directly and you don’t have to be bothered.
I just got in contact with a shop that has been wheeling a Jeep on a 4.5" Metalcloak long arm lift and 40s (trussed axles with 5.13 gears) and man it road amazingly plush. I was surprised to hear that the axles in JT's can hold 40s if your not ridiculous with it (it also has RCV's If i remmember correctly) and has ridiculous amounts of flex. My concern would be with 5.13's and 40's - how long will it last ? can i still use it as a truck with 40s ? What about 37s ? how much truck do I give up to gain more Jeep capability ?
My Gladiator with the Flatbed has 5.38 gears and 40’s. There are definitely times on the interstate that I wish I had even more gear. I personally don’t think it’s worth moving to 40’s on stock axles. The main advantage of 40’s is to increase its performance off-road. I think you could do more (with less worry) with a 37 or 38 and 5.13 gears.
@@DrivingLine I feel like 40s on a JT are great for doing Jeep stuff - but if you still want to tow/haul stuff its too far in that direction. I'll stick with my original plan of 37s , 4.5" lift and 5.13 gears on my JTR.
I’m running a 2.5 inch lift on my 392 with 37s. If you are happy with the stock shape, you can actually run a 37 by adding a 2 inch bump stop on the rear axle. If you want to just go 35, you just need a 1 inch bump stop outback. I’ve done a few videos on this subject that you can find on the Driving Line channel. I’ll actually have a video on all of the 392 upgrades I’ve done on mine coming to the channel in the next week or two.
Ali I really enjoy your videos. I have a 2020. Jeep gladiator with 37 inch tires I have a 2.5 inch Terra flex lift with a small spacer fronted rear as well. I also have a Terre flex rear extended travel kit which spaces out my driveshaft reducing the angle. My question is, can I go to a true 38 inch tire with replacing and or worrying about longer driveshafts .? I really value your opinion as there is so much misinformation on the Internet. Regards. Aaron Dusseault.
It depends more on your bump stops than anything else. If you have a 3 inch front bump stop and a 2 inch bump stop in the rear, you can go with a true size 38 just like I did on my gator Gladiator. Backspacing is important. I’m using wheels with 4.75 that are 17 x 8.5.
Hey buddy. Thanks for the helpful, and informative video . I’ve been running 35s Open country AT with 17 inch fuel wheels on my 2023 Gladiator. Is it still a good idea to upgrade to 37s Nitto Ridge Grappler ? Thanks for your advice.
The Ridge is a great tire. As I mentioned in the video, moving up to a 37 can present a few challenges. I prefer 37s over a 35. It really comes down to what you need/want.
Liked and subbed. Just bought a 2023 Gladiator Rubicon today. I honestly don’t know how much I’ll use it off road, even at all. Bought it mainly to take the grandkids for rides in the summer with the roof off. I was thinking of going 35-12.50R17 or 11:50’s on a o offset rim. What size and brand of lift would you suggest and is the 0 offset wheel a good choice? I was also looking at doing a 2” AEV spacer kit. What are thoughts on that.
You actually don’t need a lift to run a 35 inch tall tire. You can do so easily without. If you would like to lift your Jeep, there are a lot of fantastic options. An AEV spacer lift is a good option as spacers will not change your spring rate. This means, if you’re happy with the ride quality now, it really won’t change with their lift kit. That offset would work fine, but you will push the tire a little bit away from the fender.
@@DrivingLineI’ve decided to put the 2” AEV lift on it. What is your opinion on 35’ vs 37’? Can the 37” cause and transmission shift problems or rubbing?
Have you ever gone from a 35 to a 37 that weighed the same or less than the 35. My used Mojave came with Toyo 35in Open Country MTs that weigh 78lbs on stock wheels. I upgraded to Method 703 17x9 with -12 offset and Im finally going to pull the trigger on 37s Toyo Open Country RT Trail which weigh 76lbs and Im curious what that will do to my MPG, Im also regearing to 5.13 living in Colorado.
I went from a 35 inch Ridge Grappler to a 37-inch Recon Grappler. Both weigh appx 75 pounds. The fuel economy stayed about the same, but I was still on stock 4.10 gears, so I could feel the power hit.
Considering a Wrangler Sport JK, I intend to do a mix of trails with medium to high difficulty, mud and long journeys on highways. What could you recommend me? And what changes would be interesting to make?
At least 3-inches of lift (EVO MFG, Rock Krawler, or JKS area all my top picks) 37x12.50R17 Nitto Trail Grappler Dynatrac ProRock 44 front axle with RCV axleshafts RCV rear axleshafts 5.13 gears Stubby front bumper with 10K winch Rocker guards (I prefer frame mount for hardcore wheeling, but body will work if you are easy on them.) MCE high clearance fenders HD tire carrier if you need the cargo room, or just put the spare inside of the Jeep for more difficult trail riding. ARB Air Lockers Crossover steering (draglink flip) if you are going with a long travel suspension. PSC Motorsports hydraulic assist steering kit if you are going to be rock crawling frequently. The main thing is don’t skimp out on good tires and suspension. It’s the backbone of the Jeep and will make you love or hate it. I've done a fair amount of JK features and build videos on this channel that you can also check out. Just look under my Inside Line playlist.
@@DrivingLine Thanks for the list. Regarding the suspension, what is your opinion on Fox and Danytrac? And finally, with 5.13 gears, can I get better recovery and acceleration than the original gear? Considering the original tires and gears and the 5.13 with the 37s tire.
I honestly didn’t realize that Dynatrac now offered a suspension kit for the JK. I don’t have any experience with that, so I don’t really want to weigh in on it one way or the other. Their Suspension for the JL was great. Really nice riding. In terms of differential gearing, 5.13 will give you the most power and acceleration with a 37 inch tall tire.
In my experience, a true to size 37 will still hit the rear track bar. You have exactly 36.5 inches from the track bar to the receiver. It’s really tight.
So long as you add a 1 inch front bump stop, you can properly cycle a 37 inch tall tire with as little as 1 inch of lift. However, if you really want to get more off-road performance, I would recommend going with at least a 3 inch suspension lift. There are lots of great options on the market (JKS, Rock Krawler, EVO, and so on). If you want the absolute most suspension travel, you’re probably going to want to look at an Evo manufacturing coil over kit.
Great video. Prople just go bigger and bigger. Have 2 inch lift with 2 inch leveler on 35s k02 and I can go prety much everywhere. Driver skill 1st. People were doing rubicon trail on 30 before .. calm down lol oeople need lockers and 40 because 1st they can't drive. The kniw nothing about left foot breaking or anything lol. But ill give it.. it does look good. Most 98.% people do 99% paved road driving.. .. gas is not free.. be smart
I have Clayton off road HD springs and a factory wrangler 392 shocks (which suck) It’s to stiff. I want a much more squishy and softer ride . Can I just get new/better shocks or do I have to get rid of the Clayton off road springs too ? I’d like to keep them if I can, any recommendations?
@@DrivingLine dammit lol. what Springs should I get if I want a really squishy ride for faster moving off road and keeping the factory shock ? Any recommendations?
I’m not sure there is a short enough spring on the market that would pair well with the stock shocks. I can tell you that BDS and JKS 3 inch lift springs run on the soft side, but I’m not sure how those would pair with stock shocks. You could maybe do shock extensions with those springs.
Why not pair your Clayton HD springs with the Falcons Clayton recommends? They’re adjustable and you’ll be getting the most out of the springs you already have. The stock shocks on 392s, Rubis and XR Rubis are trash. Some Falcons or Fox like Clayton recommends with their kits will set you straight.
I'm running 35's with a 2.5" AEV lift with an auto transmission. 37's would necessitate re-gearing. With the 2.5, I have plenty of break over angle. I also saw almost no loss of fuel economy and it still gets into 8th gear. As for trails? My brother had a 2" lift and 35's and took the toughest trails in Moab. Yeah, he occasionally rubbed skid plates, but he had no issues and breakover was really never a problem. The main skid plate he rubbed was a hitch skid. The departure angle was the most limiting factor, but that skid plate did the job, so I have one on my Jeep. I'm on stock rims with 35x12.5x17 tires and they do just fine and wear just fine. And the heavier 37's put more wear on the drive train, over time. However, my next set will be 11.5" wide, as you suggested. I've had pizza cutters on my Wrangler and I feel they get better traction in most off road conditions than wider tires. Thanks for the video! Great information and advice for folks. I just think 35's and a 2" or 2.5" lift gets you on those hard trails with no problem.
We’ve debated this many times and it always comes down to the cost beyond just the tire. We added the full skid system from metalcloak and so far that has been a life saver. The cost of that would have been well worth it even with taller tires and taller lift.
To be honest it’s a heavy tire to change on a trail but I would hate to struggle with the weight of anything bigger!
Based on one of your previous videos I equipped my 22 Rubicon Gladiator with a set of 35x12.5x17 Toyo Open Country ATIIIs (load range C) on Method 703s with 5.78" backspacing. This combination is actually lighter than my factory wheels with Falken ATs. Gas mileage stayed the same (with 4.10s) and actually improved with 4.88s. Debating Nitto 37x11.5x17 Recon Grapplers for my next set.
I went with 35x11.5 at3 Toyo and I actually gained 1.8 mpg
35 can handle any trail it's all the driver . We see it in Moab all the time.
I have the 37x12.5 KO2s on stock Mojave wheels. There is a claim the they weigh less than other 37s- and it's true.
The specs claim the tire is 36.5 diam new, but when I adjusted the computer, I did a courtesy check and found them to be 35.5 diam being like the best of both worlds, I decided not to complain (other than the fact that the techs that installed them programed the truck to 37 diam.- which made me think I was getting over 20 mpg)
Other factors in th change- 2.5 lift and 1.25 spacers in front only
My personal experience is that a gladiator on 37s with a 3.5" lift and f&r lockers is the best combination of off-road capability yet still road friendly and can still haul stuff as designed while getting decent mpg. I have this setup and have wheeled the Rubicon, other local 6-7 rated difficulty trails, flogged it at the Oregon dunes, and wheeled it in deep snow. Has yet to strand me. Truck gets 16mpg on the highway, hauls dirt bikes in the bed regularly, and is still comfortable to drive. P.s. If you ever get a chance, you should try the new kenda klever mt2 tires. They have been phenomenal in all the above conditions and walked up obstacles on the 'con that other jeeps with nittos were spinning on.
You singlehanded convinced me to go this route. 37 with 3.5 lift it is!!!!
Diesel gladiator here. I went with BFG 37 since it's not actually true to size. Bigger than 35, not exactly 37, lighter and fits a full size spare. Transmission still runs through all the gears.
Can the Speedo be recalibrated for the larger size?
@@michaelquatrano6189 yes it can. I went with an option AEV has for calibration because I didn't have a tazer at the time, but I'm sure the tazer can do the trick as well.
For anyone who will be doing serious offroading and not building a Jeep for the malls, just go with the 37s! I went with the EVO 4.5" lift and re-geared to 4.88 on my JKU Rubi and am running Toyo Open Country MT 37x12.5 and it is fantastic!
I thought about 35s and fuel mileage but at the end of the day, I didn't want to go to the trouble of doing a lift for 35" tires and then decide that I want to run 37s afterall and having to do this whole exercise twice!
I went directly to 37s and have zero regrets!
I usually say "meh" on these and disagree on so much but you hit it all perfectly and even hinted at lighter tires for normal all around. I have tried to help so many and they end up miserable thinking I have no clue because they can't think clearly when getting the bug. I will have them all watch this.
Great video, addressed all the questions and hesitations I had. Just bought a JT Maxtow, wanted to upgrade but not have to make major changes to gears, etc. This convinced me to stick to 35's, even though I love the look of 37's.
37x12.5 KO2s measure in at 35.5 diam. With that gives a good compromise. That with a 2.5 lift and a method beadgrip wheels makes a perfect Overlander/point and excelerate combination... a real go anywhere jeep with a little spare change left in your pocket.
Right to the point, informative video. Very well done!
Thanks for the comparison of 35s v 37s. I have been on the fence about which way to go. I just installed a Accuair system and need to upgrade wheels and tires. I have been thinking about the 37s. I just do moderate weekend wheeling. With the air suspension I can lower down for highway driving and get back some MPG. As long as the rest of the stock drive line can hold up to 37s I can replace gears later if needed.
Great video, I have the same Gladiator, color too! I’m ready for 35s now!
Get 37s ! You won’t regret it
In most cases the skinnier tire actually lays down more contact patch than the wider tire. They break down sooner, easier, and more thoroughly than the wider 12.5"
No clue what I'm talking about here but I would assume at a reasonable tire pressure and sidewall (and properly sized wheel) that the 12.5 would have a larger contact patch almost always?
And let's be honest the wider tires look better haha
The 35x11.50 Trail Grapplers I had worked great. There’s definitely been more 11.50 offerings coming out which is always nice to have the choice.
@@DrivingLine was that with stock wheels?
Yes. Stock Rubicon wheels.
@@trashbandit2449 Contact patch when aired down depends a lot on the tire construction. BFG KO2/KM3 flex so well aired down that the differences are minimal between tire widths, but many popular off road tires do provide a wider contact patch with the more narrow tire versus the same tire in a wider option. There's a guy here on YT who did some pretty thorough testing to show this.
I have the extreme recon package rims and tires 35s 12.5 on my altitude gladiator no mods and ran it like that now I just did a falcon shocks with 4inch ready lift kit and jks swaybar disconnect upgrade looks really good
37s on my diesel rubicon was the move
I went with 35/11.5/17’s because of your white Galdiator
Same
2020 Gladiator sport here with 37s on 488s with flat fenders.
I work on a landfill and I'm off road a lot, nothing extreme mostly because I'm too old.
Nobody tailgates me in the rain because of my four rooster tails 😅
Does the sport come with 4.88 or 4.10s or did u add the 4.88? And is the sport the wider rear like he mentioned?
@RobB-z8o
The sport came with 3.73
The 12° -offset helped the width front and rear. $1K in parts, $2K for install.
I'd love to send pictures
Right when I hit the like button, you were at 37, so I guess I'm going to 38s!
I like the 38’s too. 😎
Hell yeah ! Haha I have 38s on my stock wrangler 392 it’s boss af
I have 38’s Nitto Trail Grappler with Clayton 3.5” Overland on my Gladiator Rubicon. I have to lift the spare into the bed which sucks at my age of 51, but I like the 38s.
[7/3 6:04 p. m.] +52 984 118 2021: Disculpas Hermanos no podré asistir me salio un contratiempo. Nos vemos en la próxima. Pasenla Super.
[7/3 6:21 p. m.] +52 998 231 5635: Hermanos ya está listo todo para recibirlos
I have Gladiator Rubicon Launch edition. Replaced the oem with the 35. Almost went with the 37 but wanted to stay with the OEM rims. Recently I was so tempted to go with 37 next time around but glad I found your video! I am gonna stay put at 35! Thank you!🙏
Dam. This video you produced is so informative. A lot of time, money, energy, and knowledge went into this UA-cam viewing.. Went down this road with my diesel wrangler, and gladiator.
Good job.amazing video
Thank you.
@@DrivingLine Mr. Ali quick question would you know why my rear axle is off centered about 4 and 1/2 inches to the right ? It looks ridiculous to me but the thing drive straight and has no problems
That’s a big offset. The track bar is what determines the axle placement side to side. Either you need an adjustable one and/or there is an issue with the track bar bracket. If you take it to a good alignment shop, they can give you the exact degrees and measurements that your tracking is off front and rear. That’s what I would do.
@@DrivingLine if the track bar is the issue would it stand out immensely that it was bent or something? Because it looks dead straight and then track bar brackets look straight too. But the rear Clayton off road springs are both pitched to the right. It’s just so weird to me because I would think that would make it crab walk but it’s driving dead straight
It might not be super obvious because the track bars have a few bends in them. If you have the high clearance track bar that works with the larger spare tire, that one would be even more challenging to see if it was bent. The track bar bracket, however should be pretty obvious if there is an issue there.
Good video. I am in the process of doing this right now. I am leaning more toward 37s, maybe 38s for my gladiator rubicon. I'm going to do a terra flex 3inch suspension first, then tires. I do have plans to go to a 5.13 gears as well.
Hey Ali great detailed video as usual! You’re so pro , I learned a lot from your experience!
I just installed 37 Nitto Grapplers on my 392 ,I should I already have wheel-spacers to avoid any rubbing on the control Arms no significant issue driving as always , no off roads for me it’s daily driving and simple camping trails , any suggestions I so appreciate you thx!
I run a 38.13.50.17 on KMC grenades 17x9 3.5bs -38 offset aired down 7 psi in snow with a light setup it darn near floats where 3/4 1/2 tons trucks get stuck also I n run 5:13 Dana spicers and definitely upgrade those balljoints people!
Ali you hit it right on the head. Great info of our community.
Ali, I literally just picked up a Rubicon Gladiator, but I have the manual transmission. Thoughts?
Also, I’ve been keeping an eye on you since the red Ranger you had years ago. You’re a real OG, dude.
Thanks! I actually just saw my old Ranger a few weeks ago. I sold it to a friend of mine. I like the manual, you just tend to need a little bit more differential gearing whenever you’re moving up tire size. So, 4.10 might feel a little less powerful with your setup on a 35 over a Gladiator that has the eight speed automatic.
First of all, forgive me if my spelling is not very correct, I am French 😅! I ride a Mojave and am considering upgrading to bigger tires. My use is mainly travel, hunting, overlanding and a little off-roading but nothing extreme. I already have the AEV borah rims and was ready to buy BF KO2 35 12.5 x 17, but after watching your video I will certainly opt for 37'' I love NITTO tires but difficult to find in Europe and make them come double the price between taxes, customs duties and transport. So I'm going to stick with BF KO2s. I would also like to be able to drive with peace of mind by improving what is necessary to have a reliable unit. My question is: is the Specer Lift 2'' AEV sufficient for my use and what gear kit would you recommend (there are far too many references on the market) and in France it is very difficult to find someone who will guide me. I can't afford to make a mistake in my choice, I will have to bring these parts from the USA. Thank you in advance and congratulations on your channel. always interesting content
It sounds like for what you are doing, the 2 inch AEV lift will work perfectly fine. Good luck with your build and thank you for watching!
Can u also make a similar video regarding the jlu? 😊
Always great content!
Man, really great video. Thanks! 🤙🏼
Dammit, the 37’s mostly only come in 12.5“ I wish ko3 would eventually come in an 11 1/2 inch width but they won’t show that on their future list. The MPG difference is huge between 35 and 37 and I want to keep at least 11 1/2 inch width and you only one is the needle Ridge grappler but they also waste 71 pounds they do a 35 x 11 1/2 K03 BFG coming up in the future. I really would like to run 37 but the weight and MPG’s and the width is an issue. After watching a video on slightly narrower tires, being better then wider it also makes me want it
Great video, very pro! Thanks for that.
I bough a JT Rubicon 2023 with almost cero miles in it and already has 37s. Would you please suggest a kit to make the proper re gearing (5:13s I guess would be the best for performance) and odometer adjustment?
A 5.13 is a great ratio for a 37. You can also go 4.88, but it won’t hold overdrive gears as well on the interstate. The only advantage of 4.88 is that if you frequently do cruising speeds below 60 mph, the RPMs will be lower, which means you’ll get slightly better fuel economy. I went with 4.88, and if I had to do it again, I would’ve gone 5.13. All you need is a Tazer JL mini from Z automotive to recalibrate for the gear change tire size.
@@DrivingLine Thank you so much for your prompt response. I´ll go with the 5.13 then. Any suggestion on which and where to purchase that 5.13 re gear set?
I’ve had great luck with gear sets from Nitro gear and axle. You can buy them directly from them. However, it’s sometimes better to order them through whatever shop is going to install them for you. That way if there is an issue, the shop can deal with it directly and you don’t have to be bothered.
Everybody’s obsessed with gladiators do you do any videos at all anymore of wranglers? 😢
Next video will be a Wrangler one.
@@DrivingLine
Sorry bro I wasn’t trying to be mean but thank you
Great video! Thank you for making.
I just got in contact with a shop that has been wheeling a Jeep on a 4.5" Metalcloak long arm lift and 40s (trussed axles with 5.13 gears) and man it road amazingly plush. I was surprised to hear that the axles in JT's can hold 40s if your not ridiculous with it (it also has RCV's If i remmember correctly) and has ridiculous amounts of flex. My concern would be with 5.13's and 40's - how long will it last ? can i still use it as a truck with 40s ? What about 37s ? how much truck do I give up to gain more Jeep capability ?
My Gladiator with the Flatbed has 5.38 gears and 40’s. There are definitely times on the interstate that I wish I had even more gear. I personally don’t think it’s worth moving to 40’s on stock axles. The main advantage of 40’s is to increase its performance off-road. I think you could do more (with less worry) with a 37 or 38 and 5.13 gears.
@@DrivingLine I feel like 40s on a JT are great for doing Jeep stuff - but if you still want to tow/haul stuff its too far in that direction. I'll stick with my original plan of 37s , 4.5" lift and 5.13 gears on my JTR.
Can you give a breakdown on the 392 rubicon unlimited 2021, looking to run larger tires than the 33 “ and what is needed for off-road trails also
I’m running a 2.5 inch lift on my 392 with 37s. If you are happy with the stock shape, you can actually run a 37 by adding a 2 inch bump stop on the rear axle. If you want to just go 35, you just need a 1 inch bump stop outback. I’ve done a few videos on this subject that you can find on the Driving Line channel. I’ll actually have a video on all of the 392 upgrades I’ve done on mine coming to the channel in the next week or two.
@@DrivingLine thanks
Ali I really enjoy your videos. I have a 2020. Jeep gladiator with 37 inch tires I have a 2.5 inch Terra flex lift with a small spacer fronted rear as well. I also have a Terre flex rear extended travel kit which spaces out my driveshaft reducing the angle. My question is, can I go to a true 38 inch tire with replacing and or worrying about longer driveshafts .? I really value your opinion as there is so much misinformation on the Internet. Regards. Aaron Dusseault.
It depends more on your bump stops than anything else. If you have a 3 inch front bump stop and a 2 inch bump stop in the rear, you can go with a true size 38 just like I did on my gator Gladiator. Backspacing is important. I’m using wheels with 4.75 that are 17 x 8.5.
@@DrivingLine so I don’t need to worry about drive shaft length.
I don’t know the details in terms of suspension travel of your kit, but I can tell you with my 3 inch lift you can retain the factory driveshafts.
Hey buddy.
Thanks for the helpful, and informative video .
I’ve been running 35s Open country AT with 17 inch fuel wheels on my 2023 Gladiator.
Is it still a good idea to upgrade to 37s Nitto Ridge Grappler ?
Thanks for your advice.
The Ridge is a great tire. As I mentioned in the video, moving up to a 37 can present a few challenges. I prefer 37s over a 35. It really comes down to what you need/want.
And if you only use on road, any HT tyre is ok, right?
Great video! 👍🏻
Liked and subbed. Just bought a 2023 Gladiator Rubicon today. I honestly don’t know how much I’ll use it off road, even at all. Bought it mainly to take the grandkids for rides in the summer with the roof off.
I was thinking of going 35-12.50R17 or 11:50’s on a o offset rim. What size and brand of lift would you suggest and is the 0 offset wheel a good choice? I was also looking at doing a 2” AEV spacer kit. What are thoughts on that.
You actually don’t need a lift to run a 35 inch tall tire. You can do so easily without. If you would like to lift your Jeep, there are a lot of fantastic options. An AEV spacer lift is a good option as spacers will not change your spring rate. This means, if you’re happy with the ride quality now, it really won’t change with their lift kit. That offset would work fine, but you will push the tire a little bit away from the fender.
@@DrivingLineI’ve decided to put the 2” AEV lift on it. What is your opinion on 35’ vs 37’? Can the 37” cause and transmission shift problems or rubbing?
@pjfain173 I have a Rubi. Went with 2" lift and Toyo at3 35x11.5x17 I got almost 2 mpg better over the stock 33 wild peaks
How about the Nitto 37x11.5x17 they make on stock rims and Diesel Rubicon
You could run an 11.50 on the stock wheel, but will need a wheel spacer to keep it from rubbing the control arms in the front.
Good video 👍 👍
Any preference on Nitto’s vs Falken’s in 35’?
I prefer the Nitto’s.
Have you ever gone from a 35 to a 37 that weighed the same or less than the 35. My used Mojave came with Toyo 35in Open Country MTs that weigh 78lbs on stock wheels. I upgraded to Method 703 17x9 with -12 offset and Im finally going to pull the trigger on 37s Toyo Open Country RT Trail which weigh 76lbs and Im curious what that will do to my MPG, Im also regearing to 5.13 living in Colorado.
I went from a 35 inch Ridge Grappler to a 37-inch Recon Grappler. Both weigh appx 75 pounds. The fuel economy stayed about the same, but I was still on stock 4.10 gears, so I could feel the power hit.
Considering a Wrangler Sport JK, I intend to do a mix of trails with medium to high difficulty, mud and long journeys on highways. What could you recommend me? And what changes would be interesting to make?
At least 3-inches of lift (EVO MFG, Rock Krawler, or JKS area all my top picks)
37x12.50R17 Nitto Trail Grappler
Dynatrac ProRock 44 front axle with RCV axleshafts
RCV rear axleshafts
5.13 gears
Stubby front bumper with 10K winch
Rocker guards (I prefer frame mount for hardcore wheeling, but body will work if you are easy on them.)
MCE high clearance fenders
HD tire carrier if you need the cargo room, or just put the spare inside of the Jeep for more difficult trail riding.
ARB Air Lockers
Crossover steering (draglink flip) if you are going with a long travel suspension.
PSC Motorsports hydraulic assist steering kit if you are going to be rock crawling frequently.
The main thing is don’t skimp out on good tires and suspension. It’s the backbone of the Jeep and will make you love or hate it.
I've done a fair amount of JK features and build videos on this channel that you can also check out. Just look under my Inside Line playlist.
@@DrivingLine Thanks for the list. Regarding the suspension, what is your opinion on Fox and Danytrac?
And finally, with 5.13 gears, can I get better recovery and acceleration than the original gear? Considering the original tires and gears and the 5.13 with the 37s tire.
I honestly didn’t realize that Dynatrac now offered a suspension kit for the JK. I don’t have any experience with that, so I don’t really want to weigh in on it one way or the other. Their Suspension for the JL was great. Really nice riding. In terms of differential gearing, 5.13 will give you the most power and acceleration with a 37 inch tall tire.
Do you have a 38" MT tire you recommend?
I like the 38x13.50R17 Nitto Trail Grappler M/T
How are the ball joints holding up with 37 s
I’ve never had an issue with the stock ball joints.
They make the wheel in 8.5 wide... it makes no sense for them to handicap the vehicle with the 7.5 ones... specially for the Rubi/Mojave trims
Will a 37 inch spare tire fit with the stock rear track bar if it's aired down?
In my experience, a true to size 37 will still hit the rear track bar. You have exactly 36.5 inches from the track bar to the receiver. It’s really tight.
I wish BFG K03 would come in 37x11.5x17
is the grey rubicon in 35 vs 37 final toughs is on 16 inch wheels ?
No. Those are 17’s.
But can you flex as much with a 37in compared to 35in tire with a 2.5in lift
How much lift for 37’s? To take advantage of max flex.
So long as you add a 1 inch front bump stop, you can properly cycle a 37 inch tall tire with as little as 1 inch of lift. However, if you really want to get more off-road performance, I would recommend going with at least a 3 inch suspension lift. There are lots of great options on the market (JKS, Rock Krawler, EVO, and so on). If you want the absolute most suspension travel, you’re probably going to want to look at an Evo manufacturing coil over kit.
Live in Kannapolis nc let's roll
Great video. Prople just go bigger and bigger. Have 2 inch lift with 2 inch leveler on 35s k02 and I can go prety much everywhere. Driver skill 1st. People were doing rubicon trail on 30 before .. calm down lol oeople need lockers and 40 because 1st they can't drive. The kniw nothing about left foot breaking or anything lol. But ill give it.. it does look good. Most 98.% people do 99% paved road driving.. .. gas is not free.. be smart
Just based on esthetics you must go with 37" no question about it.
Lol…this comment is cringy. Even stock Gladiator Rubi’s look great on 33s. 35s are plenty. Mall crawling on donks with 37s looks terrible.
@@ShiftyIntentionscringy? Seriously? That thing needs big tires or it looks like grandma drives it.
Wrong
I have Clayton off road HD springs and a factory wrangler 392 shocks (which suck) It’s to stiff. I want a much more squishy and softer ride . Can I just get new/better shocks or do I have to get rid of the Clayton off road springs too ? I’d like to keep them if I can, any recommendations?
The 392 shocks are valved lightly. So, if you feel it’s too stiff, I would recommend swapping out your springs.
@@DrivingLine dammit lol. what Springs should I get if I want a really squishy ride for faster moving off road and keeping the factory shock ? Any recommendations?
I’m not sure there is a short enough spring on the market that would pair well with the stock shocks. I can tell you that BDS and JKS 3 inch lift springs run on the soft side, but I’m not sure how those would pair with stock shocks. You could maybe do shock extensions with those springs.
@@DrivingLine how would the extension effect the ride ?
Why not pair your Clayton HD springs with the Falcons Clayton recommends? They’re adjustable and you’ll be getting the most out of the springs you already have.
The stock shocks on 392s, Rubis and XR Rubis are trash. Some Falcons or Fox like Clayton recommends with their kits will set you straight.
Do check out Method Bead Grip Wheels/Rims..
I actually have Bead Grip Methods on my gator colored Rubicon Gladiator. It’s a great wheel.
33 Gang anyone?
I hope I (accidentally) drive over a sea of nails with my JT. Then I’ll have to replace my 35s and can go to 37s 😂
Get some portals and get serious
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