Originally Posted by
Sixty Fiver
700c by 35... the c is an old French designation for a narrower 622 tyre where 622 is the bead seat measurement and there is no c after the second number which means the tyre is 35mm wide
fify
I'm only aware of the A, B and C designations. C is narrower than B which is narrower than A.
And Scrod is correct. The manufacturers and distributors have done little to clean up the confusion around various tires sizes. I just speak in BSD and mm width to try and avoid confusion, but that only works if the person you're talking to knows as much about tires as you do.