Originally Posted by preston811

I once measured the distance from my toe to touching my 700x25 and it was like 2 inches; unfortunately I'm across the country from my bike now or I'd doublecheck. I have yet to figure out how this is possible though given their supposedly identical dimensions and angles but it must be more than just tire diameter. (I have a 56cm also. Surly comes with 170mm cranks too vs WTs 165 but I think you said you put 170 on yours.) 40-50mm tires is pretty xtreme, the Surly does fit up to 700x38 according to their site (but bikesdirect says WT fits up to 700x45, hmm)