When converted to inches, 235/30R21 is equivalent to 26.6x9.3R21.
235/30R21 tire has a section width of 9.3 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 2.8 inches (71 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 26.6 inches (675 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 83.5 inches (2119.5 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. 235/30R21 tire makes 759 revolutions per mile (472 revolutions per kilometer).
Overall Diameter (Tire Height)
472 per km
759 per mile
Best Prices on 235/30R21 Tires
235/30R21 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 235/30R21 tire can be replaced with 10 compatible tire sizes. Select optional plus size to see its specs.