305/70R15 Tires

305/70R15 Conversion

When converted to inches, 305/70R15 is equivalent to 31.9x12R15.

305/70R15 tire has a section width of 12 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 15 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 8.4 inches (214 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 31.9 inches (809 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 100.2 inches (2540.3 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. 305/70R15 tire makes 632 revolutions per mile (394 revolutions per kilometer).

305/70R15 Section Width
12"
31.9"
305/70R15 Tire Side
Tire Circumference
100.2"
15"
8.4"
632 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 809 mm 31.9"
Tread Width 305 mm 12"
Rim Diameter 381 mm 15"
Sidewall Height 214 mm 8.4"
Circumference 2540.3 mm 100.2"
Revolutions 394 per km 632 per mile

305/70R15 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 305/70R15 tire can be replaced with 24 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
345/55R16 30.9" (786 mm) -2.8%
225/85R16 31" (788 mm) -2.6%
295/65R16 31.1" (790 mm) -2.3%
275/65R17 31.1" (790 mm) -2.3%
255/70R17 31.1" (790 mm) -2.3%
275/70R16 31.2" (792 mm) -2.1%
305/60R17 31.4" (798 mm) -1.4%
245/75R17 31.5" (800 mm) -1.1%
285/65R17 31.6" (802 mm) -0.9%
265/70R17 31.7" (804 mm) -0.6%
265/75R16 31.7" (804 mm) -0.6%
285/70R16 31.7" (806 mm) -0.4%
235/85R16 31.7" (806 mm) -0.4%
235/80R17 31.8" (808 mm) -0.1%
345/55R17 32" (812 mm) 0.4%
225/90R16 32" (812 mm) 0.4%
255/75R17 32" (814 mm) 0.6%
275/70R17 32.2" (818 mm) 1.1%
375/55R16 32.2" (818 mm) 1.1%
315/70R15 32.4" (823 mm) 1.7%
305/65R17 32.6" (828 mm) 2.3%
265/80R16 32.7" (830 mm) 2.6%
285/70R17 32.8" (832 mm) 2.8%
235/85R17 32.8" (832 mm) 2.8%