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Tire size help

Old 07-28-16, 04:43 PM
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fbeans
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Tire size help

My son needs a new tire and I would like to know what tire widths for his current wheel.

It's a 16" with a 16x1-3/8 tire....... what are my tire option short of buying a new wheel...

Last edited by fbeans; 07-28-16 at 05:46 PM.
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Old 07-28-16, 04:50 PM
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Is the tire worn out or is the tire flat?
Any bike shop and maybe even Wallyworld will have 16x1-3/8 tires and tubes. Make sure you use a tire lever to remove the old tire.
If you don't feel comfortable doing the repair yourself, any bike shop can do it for you and show you how for next time.
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Old 07-28-16, 05:08 PM
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Ok....

I was asking about wider tire options, can I put a 1.5, 1.7, 1.95, 2.0 tire on the current rim that has a tire on it 1-3/8. The tire is worn out and not flat. He apparently did brake adjusting without telling me, did it incorrectly and the pad wore the side of the tire and is now showing cords.

So I want to replace the tire using the current rim and just go a little wider, possible?
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Old 07-29-16, 10:08 AM
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Originally Posted by fbeans View Post
I was asking about wider tire options, can I put a 1.5, 1.7, 1.95, 2.0 tire on the current rim that has a tire on it 1-3/8...
As counter-intuitive as it may be, fractional tire sizes (16 x 1 3/8") and decimal tire sizes (16 x 1.5") are typically NOT interchangeable. The rims for those sizes are often a few mm different in diameter. Heck, in this case even fractional sizes may not match up because there have been a few different 16" fractional standards. 16 x 1 3/8" tires typically have a bead seat diameter (BSD) of 349 mm, but Sheldon Brown's site mentions two other 16 x 1 3/8" specs plus Schwinn's 16 x 1 3/4" tires that have a BSD of 317 mm.

Since there have been a LOT of different tire sizing systems, some of which are easily confused like the various 16" sizes, the ISO and ETRTO came up with their own sizing system based on consistent measurements instead of arbitrary labels. You can typically find the ISO size on a tire's sidewall even if it has some other sizing designation as well. Do you see any marking like "37-349" on your current 16 x 1 3/8" tires? That designation means the tire is 37 mm in width and has a bead seat diameter of 349 mm. If you find any other tire with a "-349" size and reasonable width, it'll fit your rims.

But to cut to the chase, I don't know of any size with a 349 mm diameter other than 16 x 1 3/8". You may be limited to that specific width.

Last edited by SkyDog75; 07-29-16 at 10:25 AM.
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Old 07-29-16, 11:05 AM
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Solved, thanks

Originally Posted by SkyDog75 View Post
As counter-intuitive as it may be, fractional tire sizes (16 x 1 3/8") and decimal tire sizes (16 x 1.5") are typically NOT interchangeable. The rims for those sizes are often a few mm different in diameter. Heck, in this case even fractional sizes may not match up because there have been a few different 16" fractional standards. 16 x 1 3/8" tires typically have a bead seat diameter (BSD) of 349 mm, but Sheldon Brown's site mentions two other 16 x 1 3/8" specs plus Schwinn's 16 x 1 3/4" tires that have a BSD of 317 mm.

Since there have been a LOT of different tire sizing systems, some of which are easily confused like the various 16" sizes, the ISO and ETRTO came up with their own sizing system based on consistent measurements instead of arbitrary labels. You can typically find the ISO size on a tire's sidewall even if it has some other sizing designation as well. Do you see any marking like "37-349" on your current 16 x 1 3/8" tires? That designation means the tire is 37 mm in width and has a bead seat diameter of 349 mm. If you find any other tire with a "-349" size and reasonable width, it'll fit your rims.

But to cut to the chase, I don't know of any size with a 349 mm diameter other than 16 x 1 3/8". You may be limited to that specific width.
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Thank-you for the explanation. I found a wheel & tire @ the junk yard $5 and so far it's holding air.
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Old 08-01-16, 09:20 PM
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Metric ... 340~ 349 to 305, , is possible & nothing beats actually Measuring
above is bead seat Diameter Radius is of course half that., inner-tubes hold the air, typically ,
not the Tire around it ..
setting aside the tubeless specialist race tire schemes..
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