The Pirelli P Zero Race TLR SL-R Tire builds aerodynamic shaping directly into the tire itself, not just the wheel it mounts to. Pirelli's PAAS profile smooths the transition between tire and rim so air stays attached longer, while the LiteCORE casing keeps the whole package light without giving up the supple, connected feel that makes a fast tire also a comfortable one. The result is Pirelli's fastest road tire yet, built for riders who feel every watt on race day. What Our Gearhead(R) Experts Are Saying:"I've pushed these hard through fast, technical descents, and the tire still tracks true in crosswinds instead of getting pushed around like a typical aero setup."