Originally Posted by
Sy Reene
No..
Vittoria

Schwalbe

Michelin.. which actually has some additional width different sizing also in the 40 and 42-622 sizes.
A1penguin.. I've been to Sheldon's site, I'm pretty sure he says the width should be the same also.. though he highlited that 1 3/4 is not the same as 1.75
Like in "Shakespeare in Love"..."It's a mystery".