When converted to inches, 205/55R18 is equivalent to 26.9x8.1R18.
205/55R18 tire has a section width of 8.1 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 4.4 inches (113 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 26.9 inches (683 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 84.5 inches (2144.6 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. 205/55R18 tire makes 750 revolutions per mile (466 revolutions per kilometer).
Overall Diameter (Tire Height)
466 per km
750 per mile
Best Prices on 205/55R18 Tires
205/55R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 205/55R18 tire can be replaced with 74 compatible tire sizes. Select optional plus size to see its specs.