Kenda 104010654B1, Gravely 07100219 Tread designed for variety of terrain, Max PSI: 40, Designed for minimum soil disturbance and easy steering, Max Load Capacity: 440, Type: Tubeless, Provides the greatest amount of traction with the least amount of turf damage, Rim Size: 6", K401, Tire Tread: Rib, Tire Size: 13x5.00-6, Designed to meet the demands of the outdoor power equipment industry, Offers oustanding flotation and better mobility with a minimal amount of ground compaction, Ply: 4