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carp_ediem2207803

carp_ediem2207803

carp_ediem2207803

carp_ediem2207803wrote a question about on August 4, 2009

I need to buy replacement tires for an old, old road bike with 27 x 1 1/4 tires. I have crawled google to convert that to an equivalent 32-630 ISO, but an mystified by the size system realcyclist is using (I cannot find any explantion of it). Can anyone help me convert to the tire size I need to find? Thank you!

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