Thanks for the responses so far. I think I'll go with 160mm rotors, I'm just new to discs and wasn't sure. As for tires, thanks for the info on the Conti's, Elisdad, I may give them a try, but still not sure. Good to know about their actual size. If I get them, I'll try the 2.4's. With no suspension, and with Stan's system, I want a high volume tire at low-pressure to soak up the trail-