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Old 04-18-12 | 05:38 PM
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Quick Q.

Trying to figure out what 700 tire is equivalent to a 27 1/4 tire. example is a 700x28 tire smaller/ thinner than a 27 1/4 thank you
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Old 04-18-12 | 05:43 PM
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700 X 35 by this list if you mean dia. 700 X 32 for width

https://www.bikecalc.com/wheel_size_math
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Old 04-19-12 | 07:48 AM
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27 1/4??? Do you mean 27 x 1 1/4?

And what do you mean by "equivalent"? You can't put a 700 tire on a 27" rim. Do you mean, what 700 rim/tire combination will give a similar ride to a 27" rim/tire combination? Then you probably just want a similar tire width. To convert from inches to millimeters, multiply by 25.4, so 1 1/4" -> 32 mm.
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Old 04-19-12 | 09:10 AM
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Rim stats, : 27" is 630, 700c is 622, that is the bead seat diameter
ETRO, a tire and rim makers agreement ...
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Old 04-19-12 | 09:47 AM
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All that you want to know about tire sizes can be found at the Oracle

Last edited by sauerwald; 04-19-12 at 09:48 AM. Reason: typo
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Old 04-19-12 | 12:39 PM
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Give a man a fish......

The number that you'll find helpful is that 1"=25.4mm

So.... 25.4x1.25= 31.75. a 32mm tire is closest to 1.25"

Also second/third that 700 and 27 are incompatible rim/tire sizes. a 700c rim will have a 622 bead diameter.

Last edited by canyoneagle; 04-19-12 at 05:36 PM.
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