70k on MT Baja Boss AT on my duramax pulling trailer crouse country 30k miles of there life. Got loaded pressure and unloaded pressure. For rear, front always stayed same and did rotation 5k & 7k.
Using an online tire pressure calculator anyone can look up, and having a similar vehicle/tire combo as you it recomended 38psi. Works well so far, even wear after a year. Off road I air down to 18. Enjoyed the video, thanks.
lol I know I was like "Hey wait a second, what's the PSI though! I have the exact same tires on the same 4Runner". Glad to know my 35ish is in the neighborhood.
For every p.s.i. Increase, the tire temp decreases. Heat equals wear. Higher pressure equals higher load capacity and decreases rolling resistance. Tires are 50% of the ride quality, shocks 50%. Stiff shocks and hard tires equals a rough ride. Running 80 p.s.i will keep tires cooler, lessening wear, assuming suspension geometry is correct and proper rotation. The issue with that is the vehicle is absorbing road shock and its not great for cab mounts, hinges and latches and most everything else. Modifying any suspension has negative effects. Pick your poison.
No one should be running 80 psi Cold Inflation Pressure on a passenger vehicle. The recommended tire pressure is printed on a label affixed to the driver door jamb. Tire makers and vehicle manufacturers have done the work for you. 80 psi is the suggested Maximum Cold Inflation Pressure should you be transporting a load weighing such that it puts the vehicle at it's GVWR.
@@applesbighatranch6906 4 door pickup trucks are passenger vehicles. 10 ply load range E tires are very common on them. Obviously you don't inflate a tire past its maximum. Although i have always run 40 p.s.i in 35 p.s.i tires.
the p.s.i number in the door jamb in for the rated GVWR. Which is set based on the frame, suspension differential and tire weight rating. And to maintain ride quality, in passenger vehicles. Ford lowered the p.s.i number on their suv, a long time ago, and they had a rash of tire blowouts from exessive tire temperature, killing people.
run is the wrong verb, you dont 'run' a tyre pressure. you inflate your tyres to your chosen pressure, and drive your car. you dont 'run' anything apart from a race or a bath.
I run 36 psi Cold Inflation Pressure in my 34 X 10.50 X R17LT D Load Range to match the Load Capacity of the OEM P-Metric tire fitment. Seems my earlier comment was deleted, perhaps because I recommended an online tire pressure calculator in the name of SAFETY. Oh well. What can you do.
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I cannot get enough of your 4Runner. Beautiful as always and the way it sounds just very good..
Thanks! That's why it hasn't really changed much over the years - I'm happy with it the way it is!
70k on MT Baja Boss AT on my duramax pulling trailer crouse country 30k miles of there life. Got loaded pressure and unloaded pressure. For rear, front always stayed same and did rotation 5k & 7k.
Using an online tire pressure calculator anyone can look up, and having a similar vehicle/tire combo as you it recomended 38psi. Works well so far, even wear after a year. Off road I air down to 18. Enjoyed the video, thanks.
Great advice. Thanks for sharing.
what pressure are you running then?
@@thecount1001 Mine were at 32 PSI here, going to add a bit 👍
lol I know I was like "Hey wait a second, what's the PSI though! I have the exact same tires on the same 4Runner". Glad to know my 35ish is in the neighborhood.
Wouldn’t you want to do this with tires at running temp, or does that not make enough of a difference to bother?
I've heard arguments for both options, I always adjust pressure when cold so I do the test then too
Yay! More rims and tyre videos!!!
@@Groots22 I knew you'd be happy 😂
Cool. Never knew about the chalk test before... learn something new every day : ). Just out of curiosity, what psi are you running with your tires?
@@troybabs Mine are a little low right now at 32 PSI. I like to run them a bit on the harder side (higher 30s) to improve fuel economy a bit
Very helpful! Never had heard of this.
You are the Bannana King Charlie ❤❤❤
What’s the part number on the original wheel center cap? Mine are missing.
Over 55,000 miles on my K02 running at 50psi cold on my WK2
pretty cool bro!
Super helpful!
Thanks for watching!
I imagine the “perfect psi” is a pretty large range. I’ve tried this a few times and all the chalk wears away
Yeah, as long as the pattern is even, you're good
I recommend conducting this test at higher speeds, as tire deformation changes significantly with speed especially centre/edges.
Yeah, faster than I did it but not so fast that you have to make steering adjustments
@CanadianGearhead loved your video btw!
For every p.s.i. Increase, the tire temp decreases. Heat equals wear. Higher pressure equals higher load capacity and decreases rolling resistance. Tires are 50% of the ride quality, shocks 50%. Stiff shocks and hard tires equals a rough ride. Running 80 p.s.i will keep tires cooler, lessening wear, assuming suspension geometry is correct and proper rotation. The issue with that is the vehicle is absorbing road shock and its not great for cab mounts, hinges and latches and most everything else. Modifying any suspension has negative effects. Pick your poison.
No one should be running 80 psi Cold Inflation Pressure on a passenger vehicle. The recommended tire pressure is printed on a label affixed to the driver door jamb. Tire makers and vehicle manufacturers have done the work for you. 80 psi is the suggested Maximum Cold Inflation Pressure should you be transporting a load weighing such that it puts the vehicle at it's GVWR.
@@applesbighatranch6906 4 door pickup trucks are passenger vehicles. 10 ply load range E tires are very common on them. Obviously you don't inflate a tire past its maximum. Although i have always run 40 p.s.i in 35 p.s.i tires.
4th Gen
*Respect*
the p.s.i number in the door jamb in for the rated GVWR. Which is set based on the frame, suspension differential and tire weight rating. And to maintain ride quality, in passenger vehicles. Ford lowered the p.s.i number on their suv, a long time ago, and they had a rash of tire blowouts from exessive tire temperature, killing people.
Stock tires yes, aftermarket use the psi on the tire. Different strokes for different folks.
run is the wrong verb, you dont 'run' a tyre pressure. you inflate your tyres to your chosen pressure, and drive your car. you dont 'run' anything apart from a race or a bath.
I run 36 psi Cold Inflation Pressure in my 34 X 10.50 X R17LT D Load Range to match the Load Capacity of the OEM P-Metric tire fitment. Seems my earlier comment was deleted, perhaps because I recommended an online tire pressure calculator in the name of SAFETY. Oh well. What can you do.
@@applesbighatranch6906 Take it up with UA-cam, I didn't delete anything.
Remove the stick from your rear end.