Designed for severe racing and cross-country conditions. Provides enhanced wear resistance and grip over rocks, hard ground and other off-road terrain. Also, tire of choice for select adventure motorcycles. Designed for the speed, horsepower and weight of large-displacement rally-type machines. The D908RR is DOT approved for street-legal use. Reinforced tread blocks yield enhanced traction and stability. Generous open space around the shoulder area helps optimize traction in sand and mud. Heavy-duty casing for excellent bump absorption and allows lower air pressures for a larger footprint and increased traction. Tire Specifications: Load / speed index: 70S. Recommended rim size (inches): 3.50 (2.15 - 2.50, 4.25). Overall diameter (inches): 27.24. Overall width (inches): 5.83. Full tread depth (inches): 16/32.