Specifications include, but are not limited to: 22.1 RADIAL TRUCK TIRES 10R22.5 quoted herein must be 100 level (GSA #ZZT381M) grade equal or superior to the following: Cooper Tire Company RM185 and 170. If bidding a tire brand other than as specified, the bidder must include complete specifications detail and a manufacturer’ s cross reference chart showing the alternative tire to be equal to or better than the tires named herein. Requirements as follows: 10R22.5 (Equivalent to Load Range F 12 Ply) 11R22.5 (Equivalent to Load Range G 14 Ply) Equal to or superior to Goodyear G 159 or Bridgestone R-250 tire. Wheel size 22.5 x 7.50 (To fit 10R22.5 Radial Tire) Wheel Offset - 6.44” Disc - .375” Approximate Weight - 76 lbs. Maximum Load - 6,620 lbs. Maximum Inflation - 120 psi Color – Black.