Originally Posted by
tomato coupe
Guys that actually ride fast would disagree. The standard tire width for Paris-Roubaix is 28mm. This year's winner of the brutal Dirty Kanza was on 42mm tires, and he's a pretty big guy (170 lbs). If wider tires were faster, they would use them.
also, don't forget that's 28mm tubular, which is like 25mm clincher. 28mm clinchers once mounted on a wide rim will be wider than 28mm tubular.