When converted to inches, 325/25R21 is equivalent to 27.4x12.8R21.
325/25R21 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 21 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 3.2 inches (81 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 27.4 inches (695 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 86 inches (2182.3 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. 325/25R21 tire makes 737 revolutions per mile (458 revolutions per kilometer).
Overall Diameter (Tire Height)
458 per km
737 per mile
Best Prices on 325/25R21 Tires
325/25R21 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 325/25R21 tire can be replaced with 23 compatible tire sizes. Select optional plus size to see its specs.