Developed especially for serious racers. Reversible tread pattern with a tread-wear indicator that clearly shows when to reverse the tire on the rim -when the "M" disappears, the tire can be turned around. Mirror-image knobs provide equal traction in both directions on a wide range of terrain. StarCross features a compound designed for mixed-soft conditions. Strong casings incorporate three cross-woven polyamide plies. Staggered shoulder knobs for superb cornering action. Super stiff sidewalls for high-impact shock absorption on landings. Flexible tread minimizes rebound on rough tracks and helps keep tire in contact with the ground.