Schwalbe Nobby Nic Performance Mountain Bike Tire. Schwalbe calls the Nobby Nic their allgrounder tire. That's because it's light, fast, and offers incredible grip over a variety of trail conditions--from loose to hardpack, to loose over hardpack. If all mountain is how you ride, Nobby nic is all the tire you're likely to need.
Vittoria Cross XN Cyclocross Tire. The Vittoria Cross XN is the cross tire to turn to for speed when course conditions turn drier and harder. This lightweight cyclocross tire features a studded diamond center tread for smoking the hardpack and side knobs for grabbing some serious grip in the loose stuff.