Bridgestone Motorcycle Tires - Serving society with superior quality. All position purpose-built race tires designed for mini-motocross riders. Outstanding performance on today's motocross soft terrain courses. Extra wide tread blocks and rounded profile offers the self-cleaning bite you need in soft conditions. Tire Specifications: Load rating: 33J. Speed rating: J. Overall diameter (inches): 15.2. Tread width (inches): 2.8. Tread depth (inches): 10/32. Approved rim size (inches): 1.50. Maximum load (pounds): 254. Maximum PSI: 36.