Tyre size conversion?

Question

Is 700 x 32 the same as 27 x 1 1/4? The first is metric, the second imperial.

Answer 1

They are not at all the same size.  A 700C tire is not interchangeable with a 27" tire in any way, shape or form.

You may want to read the following article on tire and rim sizes by the late, great Sheldon Brown:

http://www.sheldonbrown.com/tire-sizing....

You'll note from the article, a 700C tire is 622mm.  While a 27" tire is 630mm.

Hope this helps.

Answer 2

Does this help

ETRTO - 32-622

British imperial  -

British modern -  28x1-5/8x1¼

French - 700C Course 700x32C

USA - 700x35C

German - 28x1¼x1¾

  

Try this website