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Understanding Tire Sizes | Tech Tuesday
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- Опубліковано 18 сер 2024
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For more on tire, tube and wheel fit standards check out:
www.parktool.com/blog/repair-help/tire-wheel-and-inner-tube-fit-standards
Started confused and ended up partially confused.🤣
I need to see and hear it all physically explained right before me. Like hands-on experience.🙃
I found a couple of examples on my 27" tires... E.T.R.T.0 numbers
22-630 size 27" 1/4
28-630 for same size 27" 1/4
Nice demonstration...👍🔧🚲
Absolutely a big problem with bike industry, including the 20 or so different seat post diameters
What do you mean? Clearly a 25.4 and a 25.6 are worlds apart and both necessary!
Not really, practically no one uses anything else than 27.2, 30.9, 31.6 and 34.9mmø anymore.
Well more so with MTB's. Race bikes all have the same rims and tyres (the vast majority excluding tubeless). In the french system the 700c x 20 or 25 can't fail.
@@kodek2000 Race bikes? Pretty sure you mean "road bikes".
@@th_js No I mean race bike. You guys don't call em that? The way I see it you can use any bike on the road but racing means fast. I'm Belgian we actually use the french word course. 700c is a typical race tyre.
Great video guys, why doesn't the bike industry come up with standards that are the same throughout, its so confusing some times.
hahahahaha
57-559
26” MTB still great to ride.
Insoft: Ha Ha. If a rider commonly does inverts and spins or huge drops/jumps like Rampage :). Otherwise move into the 21st century.
Yeah! nothing like 26`!!! No matter what type of bike you have, what matters is WHO RIDES it .
I commute all year in Michigan on 26 inch MTB
Long live 26”
Don't listen to the haters... In the words of the philosopher David Goggins... Stay. F***. Hard.
Finally found someone who was able to explain this!
THANK YOU!
Can you explain to me................I still don't know which tire I can fit on the rim with no name............Confused ?........you betcha
32-622, 44-622, 58-622, 61-584, 76-584
As the tire pressures come down, I look for wider rim to tire ratio - I changed to in 30mm inner for the 61-584 tires to run 28psi front, and 40mm inner for the 76-584 tires to run 10psi front
Thanks guy, you help so much brother.
If Abbott and Costello had taken up cycling… 😁
Very informative and enjoyable thanks
ETRTO is so fun to say.
liked him in star wars
I have a 1991 Bridgestone MB-0 with slicks (I bought it new, to use as a fast hybrid, before hybrids were a thing) - tyres are 25-559 (26 x 1).
Great video gents, I do appreciate it.
31 x 559 sun rims single track rims with maxxis 55 x 559 26 x 2.5 " High Roller 2 on a full suspension all mountain bike or what they call Enduro now. Im Old school.
Love what you do Calvin and Truman keep up the entertaining and informative work.
By the way I only buy Park Tool tools. They may be dearer than most but so far the quality has been good (hope it stays that way) and everything is colour matched in Park Tool blue and that helps with my OCD.
Bikes in the garage? That’s blasphemy! My bikes live in the house when they aren’t on the road or trail.
Such animals!
Garage storage invites thefts here in UK...
You're not married I understand.
Thought I was an exception, my wife has given up 🤷♀️
I have them in my house also, I even have a few at my mom's house too lol.
Thanks for all that info. Now I've gotta lie down until my head stops spinning. Oh yeah my #25.622.
thank you so much for your explanation. your videos explain clearly and clear my doubts.
32-622 Cyclo Carbon Ridley on 622-15 rim
70-584 E-MTB Haibike Fullseven 7.0 bosch ----> hard to find brownish walled tiers for those on 584-35 rim = is almost the same hight as an 29er but is rides much much softer on rocky downhills
Mine are 44-559. Never knew what those referred to until this video! Thanks!
Old Fashioned 26 ".
Winter studded 60 × 559 on rims 19 × 559.
Summer / demi-season 57 × 559 on rims 26.7 × 559.
This just made me more confused I need another beer.
Coming
I always look for the ETRTO number on a tire. That's the only number I use when I buy tires for our bikes. My mom has an E-bike with 47-622 tires
what fun. I work a lot on older bikes. So of course 1.75" width is not 1 3/4", and the 26" inch diameter is a different 26" for each. Some kind of translate table from you folks would be lovely. The good news is that bikes last a long time. The not-so-good news is that tech Tuesdays tend to cover today and tomorrow bikes, not so much the 'proven technology' (read 'old') examples that are most of what I see.
Hi John, I think we might actually have you covered. Table at the bottom of the page: www.parktool.com/blog/repair-help/tire-wheel-and-inner-tube-fit-standards
Thank you this was the only video that explained this properly
622 x 20 rims, came with 38-622 1907P-2 changed up to 54-622 K1047-003 for riding on sandy trails here in SW Florida, works great
hey, so you could say 47-622 tire would fit nicely to 20-622 rim?
Tears in the end 😂
I agree , we should all use the ISO numbers
Lot of people putting fatter tires on mountain bikes thinking that as they've got fork clearance and they fit the rims it's ok ? But Calvin and Truman say the might only ok if you travel in a straight line
Well the ETRTO of my rims is 622x19c which seems confusing, as they are using mm and the French system too
Interesting video, and yes there are too many confusing standards. But I'm still confused. For MTB tyres at least, I know that if I buy a 27.5" tyre it will fit my 27.5" rim, regardless of what the ETRTO numbers are. Obviously a wide tyre will not work on a narrow rim, and a narrow tyre on a wide rim won't work too well either. Kinda common sense though isn't it? The only annoying thing is that tyres from different brands have different widths when fitted, for example a 2.4" from Maxxis and Schwalbe fitted to the same rim will be different widths.
Living on the edge with 60-622 on my 19mm internal width rim. In case I run into problems, it’s back to the 50-622.
Push it to the limit song ensues
I used 57-559 Racing Ralph on 17mm rims on my mtb for years. With tire pressure below 2 bar (29 psi). No problems at all. And my weight in these days was 95 kg. No shocks on the bike.
@storkstork Whew, good to know - thanks!
Nice video! Interesting.
The winner in our shed:
47-622 three times! trekking, mama and grandma bike
37-622 city ebike
23-622 road racer
I won't mention the 8, 12, 20 and 26" kids and cargo bike tires. Inches are the most used units in daily life and brochures for wheels here, similar to e.g. loudspeakers.
Greets from the Netherlands
great information for solid rubber tires
32-622 Great info thanks
55-622 Front and rear on my mtb
32-622 on my gravel/commute bike
50-622 on my fiances commute bike
My wheels did have a bead, the tyres had this stitching underneath when I undid it there was a tube inside! I just stitched it back up and found some Elmer's glue, I hope it holds them on! Also When I measured them it said like 28"!LOL
Still a little lost. For example. I don't want to replace my Giant Revel 54-622 with the same size. I want a less aggressive, narrower tire with a higher tire pressure than 65psi, so I assume I need to find a 622 tire with a smaller number than 54 which is the width. Am I right so far? The tire says 29x2.10 & 54-622 but when I go to buy a tire, I don't know if a 28" will fit since nothing for sale is in mm that I can see. I do know that my rims are marked 622-17 which is the reverse of what you showed. So basically I need to make sure that I get a tire compatible with 677 diameter and 17 rim bead width but it has to be narrower. So basically what the hell do I need? I am on the road more than dirt but have to go through grass and sand every now and then to go around obstacles. Figure this one out and then I will understand...
32-622 (700 x 32c - 28 x 1 5/8 x 1/14)
Thanks for explaining the ETRTO system. Now how about the other two you referenced?
My tires don't have etrto scales, but they do say 700x40C (40-622)
Great video, and y'all did a great job at expressing how destandardized the bike system is, and I could tell how frustrating that might make your job. Thank you guys for trying to educate us on something as confusing as this.
The 40-622 is ETRTO
Yep 40-559 on tire and a 559 x 18 on rim. Thanks
Check out our bikes in the garage!? I keep my bike in my room🤓
This is great. It's too bad it's needed though. As consumers we are great at being picky, but we suck at conveying to manufacturers that we want to have a sensible system to make repairs , maintenance and modification easy.
Nice. Greatly appreciated.
ETRTO all the way. It's basically millimeters and since live in Europe it's kinda the way to go. That said, I do know what the other measurements mean as well.
It's basically millimeters that don't actually measure the wheels accurately
Hi guys, im using 50-622 etr from 50-559 tire system. It's so difficult to accelerate my new bike than the older one but stabilization of new bike is great. 🙂
Thank you very much it was very informative.
Im thinking, what is the difference between 27x1 1/4, 27x1 3/8, and 27.5 rims? Im curious about this
25-622 on my race bike
42-622 on my commuter bike
42-622 on my gravel/touring bike
47-559 back and 47-406 in front on my Bullitt Cargobike
I have tires number 700x40C what number of innertubes compatible to this
Don't forget the all the different headsets today. The Park headset tools are the last remaining tools I don't have from you. I have not purchased because of the extreme confusion I have in headsets today. (I repair all other parts of the bike currently...except internal gearing which I would NEVER buy again).
Various bikes with these most common: 58-584 tire/584x27 rim, 61-622 tire/622x30 rim, 63-622 tire/622x30 rim/71-584 tire/584x40 rim
hold on, so i have 26x2.125 tires rn, is it ok to switch to 26x2.2??
@Park Tool, my wheels are 622x20 and my tires are 42-622 (700 x 40C). Does that mean I can buy tires from 622-20 to 622-40 ?
Fantastic video
Great video thanks guys, I'm totally confused by my 37-406 (20X1.35) recumbent tire, A 20" tire doesn't fit because the 406 is a 16" rim outside diameter, so the actual size at base of flange would be 386mm, I wanted to use a fatter tire like a marathon plus but what size do I order, confused !!
The industry has not made this easy. If your tire is a 37-406, that is the common "20 x 1.75" tire family. Is your rim also marked 406? It must be if the two originals fit. This tire family is nominally 20" outside diameter at the tire, not rim. There are at least 8 other tire sizes with different non-interchangeable bead diameters claiming to be "20", but actually a different fit. You need a tire marked 45-406, or 42-406, etc. You can change with width but not the bead seat diameter.
Thanks@@parktool, rim is marked ETRTO 406-19 which seems to be 406 diameter at bead & 19mm wide inside across rim, with a 20" outside tire measurement, Now to find the tire.
Thanks for clarity!
Etrto 584x24. What is the best to hold my weight? I’m 100kgs.
Great video !
IN India Vast majority of Bikes are of Old design (single speed some call them 'roadsters') and have 635(28 x 1.5) and 584(26x1.5) tire seating diameters. this is many many millions of bicycles. 635 more popular i would say. A popular tire maker is Ralston! whose brand(amongst many others) makes these sizes in heavy duty versions(rough roads) in India. the bikes weigh 40 to 55 lbs all steel, steel rods, rack. Step through or shorter versions woudl have the 26, but perhaps 75% are taller and horiz top tube and use the 28 inch version! These things when balls new and grease fresh and adjusted correctly, really cruise.
I have some india Rickshaws with even bigger wheels. cant remember off hand their tire sizes!
I have had a frustrating time to find tires. Front is 32-559 as original but mechanic only had 47-559 for rear tire as replacement. Works ok since I’m using bike as a commuter.
It's like I'm watching Chris Pratt and that dad from cloudy with a chance of meatballs
I have a set of 20 inch BMX race wheels that currently have 1 ⅛ tires on them however I’m going to put new 1 ⅜ tires on them. Both are 451 ISO so my question is which tubes should I get? I can see ultra lite tubes are available in Both 1 ⅛ and 1 ⅜ sizes.
50x406 on my trike
60-622 on 27mm internal width rims & 75-584 on 29mm internal width rims
I bought a conti. race king 26.2 but the rim bead sit its kinda taller than the bead of the tyre. looks like a doughnut and thinner 26x1.95
Muchas gracias por la info!!
Simon karnal
Rims: 622-19 (Mavic A319)
Tires: 32-622 (Schwalbe Marathon Plus)
54-559
26/2.125
This is my current MTB tire size
I'm planning to make it road use by adding 50-559
26x1.90 slick tires
Will comment with the review
I was told to use 0.4 and 0.8 division to find out the suitable tire size for rim. Hope you guys know about that method already. It looks like a easy way to choose a correct tire size
Hey guys, always enjoyed your videos. I have a 700c x 35 tyre and the rim measures 622 x 17c. I wanted to upgrade to a 700c x 38 for some gravel riding and bought some cool panaracer tyres but on the tyre now I see it says 40-622. I am thoroughly confused. Should I keep it or return?
ETRTO system is the only system that works for me. It 's based on the international S.I. measuring system. All the others systems are from the past. So i only use the ETRTO system, only measure pressure of my tyres in bar (which should be kPa) and not PSI, and lenght's and diameters of someone in millimeter and centimeter not in inches. I measure speed in km/h and distances in km or meters. Not in miles or yards. Never understand why mostly USA not following the S.I. standard, this is the main reason why we still use this oldish inch system.
Martin Lorig i too use ETRTO the others I just call BS numbers marketing wank as the only reason I can think of they still have them on the tires.
US needs to go metric they kept the British Imperial system far too long
622x19 rim with 38-622 compass Barlow pass tires , are keeping my rides supple.
I have a Trek 4300 the existing tires are 26"x2" most of the tires I am finding to replacement are 26"x1.95" or 26x2.10, 26x2.124, 26x2.5 - the question is how critical is the difference between the 1.95 - 2.5 if the rim says 2"? this is a mountain bike by the way
Can I put a maxxis tire that’s intended for a MNT Bike on a 29” GT Performer, replacing the Slicks that come stock?
Wow! Thank you! Trying to figure out what tire to buy and it was so confusing.
At 5:52 the size tire I use is T U. R. T. L. E Power. 😂
Rims are both 622x27.5
Front Tyre 60-622
Rear Tyre 57-622
GREAT I still have no idea what size tire I can mount on my bike
My rims are (2 sets) 30-622 and 26-622 and my tires are 50-622 (winter tires are 57-622). I was a little hesitant to make the switch from 26 to 30, but the tire profile actually is really nice with the 50's
.
My front tyre has ETRTO of 51-559 but my rear has 48-559 ...I want to replace both but do I really need to get a different one for each? both front and rear rims are exactly the same size
ISO - 52/584 27.5” x2.10 650 B tires
Metric saves the day once again
Yes, I'm going through this pain now. I'm fixing up an old '94 cruiser with skinny 26" ...1/8???
Mine was 37/622 . Tyre 28x 1 5/8 x 1 3/8
Love your techtuesday
I never realized this was such a rabbit hole
how do you figure out what size rim to get if your frame doesnt have any to begin with?? what do you measure?
Rims 559x17
Tires 48-559
Bike - Volano Forza 3.0; Rims Weinmann 622-17; Tires Kenda 23-622
58-584 over here! Running maxxis dhr2 and aggressor on my Specialized 2020 Stumpjumper comp carbon
100-559 woohoo, love my fatty 👍
And my 25-622 and 250-410 are OK too !
What is the best hack for tyres for beginners
my rim is a wtb dual duty with 19-559, the Schwalbe Marathon Plus tire is 47-559. It should fit, but the tire does not fully seat even using the soapy solution method, or the temporary over inflation to 100psi. I will need to mill down the rim bead slightly. The same situation on a Kenda tire.
Hey guys, first off THANK YOU for explaining what should not be this difficult to grasp... my ETRTO size is 559 X 29.2 mm. Should I look for a tire using the ETRTO numbers only? When I search Amazon, it seems no one puts the ETRTO size in their tire product description. Help
Would the tire Schwalbe Marathon Plus 27.5x1.50 work on a Rad Mission Ebike?
I want to change the tyre of my Mountain bike which says 44-559(26x1.95), can I replace it with 54-559…? If not suggest me something that might fit. Also, my front tyre doesn't show any iso number, should I consider that both back front tyres have same iso number?
ETRTO 622-55, 406-55 // 622-35, 406-55 // 622-35, 451-28 (Onium cargo)
(49-355) 18x1.95
(49-406) 20x1.95
Merci 👍 ✌
Very informative, thanks
Here an experience: Same tire (Maxxis Ardent Race 52-622) measured 53mm width on a 21mm rim vs 56 on a 24,5mm rim. It seems that in most cases the first number on the ETRTO (MTB tires below 2.4) is corresponding in width with the first number of the nominal ETRTO.