Max Performance Summer run-flat tires provide temporary self-supporting run-flat mobility for a distance of 50 miles at up to 50 mph, even after a puncture has allowed complete air pressure loss. They are designed for serious driving enthusiasts who want a combination of a performance appearance, competent handling and Z-speed rated (or higher) durability with enhanced dry and wet traction. Often used as Original Equipment (O.E.) on powerful sports cars, performance coupes and high performance sedans, Max Performance Summer run-flat tires are not intended to be driven in near-freezing temperatures, through snow or on ice.