When converted to inches, 145/80R20 is equivalent to 29.1x5.7R20.
145/80R20 tire has a section width of 5.7 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 20 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 4.6 inches (116 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 29.1 inches (740 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 91.4 inches (2323.6 mm) is the outer perimeter of the tire. Tire revolutions indicate the number of times a tire revolves while it covers the distance in miles or kilometers. 145/80R20 tire makes 693 revolutions per mile (430 revolutions per kilometer).
Overall Diameter (Tire Height)
430 per km
693 per mile
Best Prices on 145/80R20 Tires
145/80R20 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 145/80R20 tire can be replaced with 42 compatible tire sizes. Select optional plus size to see its specs.