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Ultra High Performance All-Season 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 driving enthusiasts who want a combination of a performance appearance responsive handling and Z-speed rated or higher durability along with all-season traction including in light snow. Ultra High Performance All-Season run-flat tires branded with the M+S symbol are often used as Original Equipment O.E. on sports cars performance coupes and high performance sedans.