Originally Posted by
badger1
A "29er" rim is a "700c" rim; ERTRO designation 622 (diameter, measured to bead-seat). Any "700c" or "29er" tire will fit as far as diameter is concerned; the real questions are, as others have said, 1) is your rim wide (or narrow!) enough for any given tire and b) does your fork/frame have clearance for wider tires.
Sounds like I should jump onto Wiggle and get some of the 2" 29er Conti Race Kings!
Thanks everyone.