Mickey Thompson ET Street S/S Racing Radial Tire - P275/40R20 Proven polyester-ply, steel belted, tubeless radial construction provides strength & durability for excellent ride control on the street Proven R2 compound provides quick and consistent traction at the STRIP with little burnout required Minimal tread void for excellent dry traction, strategically placed to aid in hydroplane resistance 18 popular sizes for 15- to 20-inch wheel diameters DO NOT USE ON DYNO