SmartEvo Compound features a blend of smart polymers inherited from the Motorsport expertise, blending grip and speed, together SpeedCore brings a thinner rubber layer that allows for better handling, while the aramid fibers dispersed in the blend provide the necessary mechanical strength Color: Black/Retro Weight: 310 Defined Color: Tan The P ZERO Race TLR RS was developed specifically for racing purposes, making it one of Pirelli’s fastest and most high performing cycling tires to date. Maximizing the balance between speed, handling and grip, the P ZERO Race TLR RS features SpeedCore technology and Pirelli’s SmartEvo compound, along with a newer TLR bead design for even better compatibility and air retention. SmartEvo Compound features a blend of smart polymers inherited from the Motorsport expertise, blending grip and speed, together. SpeedCore brings a thinner rubber layer that allows for better handling, while the aramid fibers dispersed in the blend provide the necessary mechanical strength. Item Specifications: Flat Protection: Tread and Sidewall, TPI: 120, Color: Black/Retro, Weight: 310, Defined Color: Tan, ISO Width (mm): 30, ISO Diameter: 622 / Road / 29", Tire Intended Use: Road, Tire Diameter: 700c, Tire Bead: Folding, Labeled Size: 700 x 30, Tire Type: Tubeless Ready Clincher,