Trail Winner GP-210. Tread Design: A very thick, nylon casing provides a stable high-speed ride. A unique tread pattern and profile offer predicable cornering and superior road contact. Rubber Compound: Features the same high-grip compound used in IRC's popular street tires, resulting in super road grip and long wear life. Features: Designed for 70% on road, 30% off road. Excellent breaking stability and control. D.O.T. approved. Tire Specifications: Type: TT. L.I.: 57S. Overall diameter (mm): N/A. Overall width (mm): N/A. Standard rim (inches): N/A. Measurement rim (inches): N/A.