With sizing for small/mini bikes, the M22 rear tire features an innovative tread pattern, specifically designed for hard-packed surfaces. These knobby tires have been proven and perfected on race tracks, resulting in tread compounds built for long life and maximum grip
With the X30, Bridgestone's Castle Block technology is now utilized in the center blocks as well as the side. These raised "mini blocks" provide additional biting edges for more traction