Designed for the most aggressive rider, the Track Sport Radials are offered in soft and ultra soft compounds. These Full Bore M-3 Track Sport Radials are D.O.T. approved. The M-3 is the best choice for High Performance street riding, track days or drag racing. Street Legal Race Tire Soft compound Ultra quick heat up to operating temp Incredible handling and traction Best overall value of any track day/premium aggressive use radial