Originally Posted by
curttard
I was even pleasantly surprised to find that despite them saying it only fit 35s, I can fit 38s with no problem and 40s if I don't mind only having a few mm of clearance on each side in the back.
ISO standards are 6mm on each side of the tire, so you usually can go a little bigger (if you are not worried about mud or broken spokes (causing wheel wobble)).