Bicycle Mechanics - Tire size 27 x 1 1/4 versus 1 1/8

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middlepath

03-29-11, 12:15 PM

Hey everyone...
I bought a used mid 70's Bob Jackson and the original tires are still on it. They're 27 x 1 1/8. Is it okay to use 27 x 1 1/4 tires on these wheels?
Many thanks.

BCRider

03-29-11, 12:19 PM

Very definetly it is OK as far as the rims go. You'll want to check around the forks, frame and brakes to just make sure nothing is so tight fitting that an extra 1/8 to 3/16 of shape growth will be a problem.

Doohickie

03-29-11, 12:24 PM

Also bear in mind that some tire brands run bigger than others. In my experience, Panaracer Paselas tend to run big- like a 1-1/8 will be as big as a 1-1/4 from other brands.

middlepath

03-29-11, 04:18 PM

Thanks so much!