2 18x8.50-10 18-850-10 18x850-10 Compact Garden Tractor TIRE R-4 BKT 8ply TLess. 8 ply Tube-Less (load range "D"). FOR: Compact Tractor, Riding Lawn Mower - Skid Steer - Custom Builds. NOTE: NHS N on H ighway S ervice Tire. CUSTOM BUILDERS AND ALL DEALERS WELCOME.