When you're looking for superb mud traction combined with outstanding trail riding characteristics, choose the MU01 Zilla Front and MU02 Zilla Rear. Light and fast, the Zilla delivers a smooth ride even on rough trails. Extremely lightweight design provides quicker acceleration and mudslinging traction with great braking power. Added center tread for smoother ride on trails. Predictable high-speed performance. 6-ply rated. Tire Specifications: Rim size (inches): 11 x 8. Tire width (inches): 9.8. Overall diameter (inches): 24.3. Tire pressure (PSI) / Load (pounds): 7 / N/A. Tread depth (inches): 24/32.