Tire Size ?
01-13-20, 06:34 AM
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Tire Size ?
Hello,
Want to help a youngster purchase a new tire.
Present tire has these numbers embossed on it:
2.8-4.6 kgi cm
280-460 kpg
5.8 - 406
2.0 X2. 2.5.
K-841-016 TO FIT H8 422 RIM
Not into biking; age problem.
So, what please is the Rim size ? I seem to remember in the "old days" it was typically simply given as e.g., 24 inches, or...
And, the tire size ?
Thanks,
B.
Want to help a youngster purchase a new tire.
Present tire has these numbers embossed on it:
2.8-4.6 kgi cm
280-460 kpg
5.8 - 406
2.0 X2. 2.5.
K-841-016 TO FIT H8 422 RIM
Not into biking; age problem.
So, what please is the Rim size ? I seem to remember in the "old days" it was typically simply given as e.g., 24 inches, or...
And, the tire size ?
Thanks,
B.
01-13-20, 06:39 AM
#2
Zip tie Karen
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It looks like you may have an ISO-406 bmx tire:
Check this web site:
https://www.modernbike.com/iso-sizes...tires-and-rims
Good luck. PG
Check this web site:
https://www.modernbike.com/iso-sizes...tires-and-rims
Good luck. PG
01-13-20, 10:42 AM
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The nominal rim size is 20". Yours has a bead seat diameter of 406 millimeters and a width of 5.8 centimeters. Buy the tire with this bead seat diameter and it will fit. Don't buy a tire by the 20 inch designation because there are multiple bead seat diameters that use this designation. The most common are 406 mm and 451 mm. The latter has a rim that is almost 2" greater in diameter.
Last edited by Moe Zhoost; 01-14-20 at 08:58 AM.
01-13-20, 09:31 PM
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The two most common 20” wheels/tires are 406 and 451. Both sizes can be found on a variety of bmx, recumbent, folding and mini-velo bikes. And other styles. Not interchangeable. That’s an odd assortment of numbers listed in the first post. Guessing that you need a 20” x 2.25” tire. Or a 58-406 tire. Two ways to say the same size.
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05-08-21, 01:43 AM
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The other 20 tire and rim size
The two most common 20” wheels/tires are 406 and 451. Both sizes can be found on a variety of bmx, recumbent, folding and mini-velo bikes. And other styles. Not interchangeable. That’s an odd assortment of numbers listed in the first post. Guessing that you need a 20” x 2.25” tire. Or a 58-406 tire. Two ways to say the same size.
05-08-21, 12:22 PM
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Something like this:
https://www.biketiresdirect.com/prod...889+18249+3792
https://www.biketiresdirect.com/prod...889+18249+3792
05-09-21, 06:01 PM
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There is a 422mm rim and subsequent tire people seem to be missing... it is more commonly referred to as a “fat tire bike” but the rims tire seat is 422mm which brings me to why I’m looking online about this... I would like to stretch a 20x1.95 - 2.1 tire on a pair of these for my custom bike and am trying to find anyone that has done it... a radius difference of 8mm seems doable... but I can’t even seem to find anyone that knows about the ‘correct’’application of these things let alone customization of them... oh well guess I’ll buy then try haha
I tried once (accidentally) to put a 622mm tire on a 630mm rim. Absolutely no go.
I will say I couldn't find anything about a 422 size at SheldonBrown.com, which is my normal reference for this stuff:
https://www.sheldonbrown.com/tire-sizing.html
05-09-21, 06:47 PM
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There is a 422mm rim and subsequent tire people seem to be missing... it is more commonly referred to as a “fat tire bike” but the rims tire seat is 422mm which brings me to why I’m looking online about this... I would like to stretch a 20x1.95 - 2.1 tire on a pair of these for my custom bike and am trying to find anyone that has done it... a radius difference of 8mm seems doable... but I can’t even seem to find anyone that knows about the ‘correct’’application of these things let alone customization of them... oh well guess I’ll buy then try haha
