When converted to inches, 315/30R30 is equivalent to 37.5x12.4R30.
315/30R30 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 3.7 inches (95 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 37.5 inches (952 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 117.8 inches (2989.3 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. 315/30R30 tire makes 538 revolutions per mile (335 revolutions per kilometer).
|Overall Diameter (Tire Height)
||335 per km
||538 per mile
315/30R30 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 315/30R30 tire can be replaced with 1 compatible tire size. Select optional plus size to see its specs.
||38" (965 mm)