TBR TYRE F806 Size Ply Rating Speed Symbol Standard Rim Inflation Pressure Maximum Load Inflated Section Width Inflated Overall Dimeter O.T.D 10.00R20 18 k 7.50 930/930 149/146 278 1054 17.0 11.00R20 18 k 8.00 930/930 152/149 293 1085 17.5 12.00R20 20 k 8.50 830/830 156/153 315 1125 17.5