Rim Size/Wheel Diameter: 16" Rim Width/Wheel Width: 6" Bolt Pattern/Bolt Circle: 8 lug on 6.5" Center Bore: 4.90" Offset: Zero Backspacing: 3.5" Max Load: 3580 Lbs Wheel Finish: Machined/Clear Coat 16" Aluminum T03 Trailer Wheel. The exact size is 16" x 6" 8 lug on 6.5" bolt pattern. Center hole diameter is 4.9 inches. Max load is 3580 Lbs per wheel. Most common tire sizes mounted on this wheel are 235/85R16 and 235/80R16. If ordering center caps the size you would need is 4.90 inches.