When converted to inches, 325/75R20 is equivalent to 39.2x12.8R20.
325/75R20 tire has a section width of 12.8 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 9.6 inches (244 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 39.2 inches (996 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 123.1 inches (3127.4 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. 325/75R20 tire makes 515 revolutions per mile (320 revolutions per kilometer).
|Overall Diameter (Tire Height)
||320 per km
||515 per mile
325/75R20 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 325/75R20 tire can be replaced with 2 compatible tire sizes. Select optional plus size to see its specs.
||38.6" (980 mm)
||38.8" (985 mm)