The Mitas XT-454 is North America's most popular Winter Friction tire. "Knob Dimples" for improved carbide stud indexing and glue retention. Tread pattern balances deep snow performance with hard surface stability. XT-454 is a super soft tire for the rear wheel and has a white stripe. White stripe indicates a tire for Motocross winter use (spiking, motoskyring and ice motocross); it features a classical carcass and a special soft compound (the compound remains flexible and elastic in the freezing cold of up to -10C).