When converted to inches, 155/80R18 is equivalent to 27.8x6.1R18.
155/80R18 tire has a section width of 6.1 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 4.9 inches (124 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 27.8 inches (705 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 87.3 inches (2213.7 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. 155/80R18 tire makes 726 revolutions per mile (452 revolutions per kilometer).
Overall Diameter (Tire Height)
452 per km
726 per mile
Best Prices on 155/80R18 Tires
155/80R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 155/80R18 tire can be replaced with 70 compatible tire sizes. Select optional plus size to see its specs.