Rim Size/Wheel Diameter: 13"
Rim Width/Wheel Width: 5.5"
Bolt Pattern/Bolt Circle: 5 lug on 4.5"
Center Bore: 3.19"
Offset: Zero
Backspacing: 3.25"
Max Load: 1660 Lbs
Wheel Finish: Machined/Clear Coat/Black Paint
13" Aluminum Type T07 Black Trailer Wheel. The exact size is 13" x 5.5" 5 lug on 4.5" bolt pattern. The offset is zero. Center hole diameter is 3.19 inches. Max load is 1660 Lbs per wheel. This listing is for the wheel only. Most common tire sizes mounted on this wheel are 165/80R13, 165/80D13 (A78-13), 175/80D13 (B78-13) and 175/80R13. If ordering center caps the size you would need is 3.19 inches.