When converted to inches, 315/20R30 is equivalent to 35x12.4R30.
315/20R30 tire has a section width of 12.4 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 30 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 2.5 inches (63 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 35 inches (888 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 109.9 inches (2788.3 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. 315/20R30 tire makes 577 revolutions per mile (359 revolutions per kilometer).
Overall Diameter (Tire Height)
359 per km
577 per mile
Best Prices on 315/20R30 Tires
315/20R30 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 315/20R30 tire can be replaced with 1 compatible tire size. Select optional plus size to see its specs.