Kumho Tire USA
Use: A DOT-approved road-race product, it's currently the Spec tire for the SCCA Pro Racing Mazda MX-5 Cup.
Tech Notes: UTQG Treadwear 30, Traction C, Temperature A. Asymmetric tread design with two circumferential grooves molded at 4/32 inch. Does not need to be shaved before track use. Optimum Core Temperature: 212 degrees F
Size Range: 27 sizes, 13 inch to 19 inch in diameter
Use: DOT-approved design for SCCA and amateur racers.
Tech Notes: UTQG Treadwear 50, Traction AA, Temperature A. Tread Depth: 6/32 inch. Shaving: Yes - 4/32 inch. Heat cycle before use. Optimum core temperature: 195 degrees F. Directional tread design and symmetric construction allow the racer to mount this tire "inside-out" to extend its life.
Size Range: 9 sizes, 13, 17 and 18 inch diameters