Highway All Position Close Shoulder1 Traction1 Traction2 Tyre Size Ply Speed Index Standard Rim Max.Load(kg) Inflation Pressure（kPa) Inflated Section Width(mm) Overall Diameter, Inflated(mm) Pattern Depth (mm) 12.00R20 18 K 8.5 154/149 840/770 315 1125 17.0