When converted to inches, 145/70R12 is equivalent to 20x5.7R12.
145/70R12 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 12 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 4 inches (102 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 20 inches (509 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 62.8 inches (1598.3 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. 145/70R12 tire makes 1009 revolutions per mile (626 revolutions per kilometer).
Overall Diameter (Tire Height)
626 per km
1009 per mile
Best Prices on 145/70R12 Tires
145/70R12 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 145/70R12 tire can be replaced with 16 compatible tire sizes. Select optional plus size to see its specs.