When converted to inches, 135/80R18 is equivalent to 26.5x5.3R18.
135/80R18 tire has a section width of 5.3 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 18 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 4.3 inches (108 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 26.5 inches (673 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 83.2 inches (2113.2 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. 135/80R18 tire makes 762 revolutions per mile (473 revolutions per kilometer).
Overall Diameter (Tire Height)
473 per km
762 per mile
Best Prices on 135/80R18 Tires
135/80R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 135/80R18 tire can be replaced with 70 compatible tire sizes. Select optional plus size to see its specs.