Forum: Towing, Hitching, Axles and Running Gear
04-18-2016, 06:00 PM
The 145 refers to the width of the tire at its...
The 145 refers to the width of the tire at its widest point, when it is mounted on the rim and inflated. Width is measured in millimeters.
145 MM = 5.704 inches. A 580 X 12 is pretty darn close....