The 525 rear tire is ideal for soft to intermediate terrain. Wide self-cleaning tread pattern. Tall aggressive tread design. Reinforced knobs resist tearing and chunking. Note: NHS (NOT for Highway Service). Tire Specifications: Speed/load rating: 57M. Permitted rim size (inches): 2.15 - 2.75. Outside diameter (inches): 26.1. Width (inches): 3.98. Maximum load (pounds): N/A @ 33 PSI. Construction: Tube type.