AP-100 II Designed for on-highway heavy load applications. Wide footprint for even weight distribution. Size Load Index & Speed Symbols PR Load Range Rim Max load and Max Air (lbs&psi) Overall Diameter (in) Section Width (in) Tread Depth (32nds) Dual Single lbs psi lbs psi 12R22.5 152/149L 18 J 9.00 7160 135 7825 135 42.68 11.81 18.3 295/80R22.5 152/149M 18 J 9.00 7160 130 7830 130 41.10 11.73 18.3 315/80R22.5 154/151M 18 J 9.00 7610 120 8270 120 42.36 12.28 18.3 315/80R22.5 157/154L 20 L 9.00 8270 130 9090 130 42.36 12.28 18.3