305/60R18 in Inches

Tire size 305/60R18 refers to the tire size in numbers and letters such as the first number “305” indicates the tire width in millimeters, the second number “60” indicates the aspect ratio of the tire and the last number indicates the diameter of the tire. A 305/60R18 tire in inches can be described as a tire with a width of about 12 inches, a sidewall height of about 7.2 inches, and it fits on a 18-inch wheel.

Converting 305/60R18 in Inches

305/60R18 inches mm
Tire Diameter 32.4 inches 823 mm
Tread Width 12 inches 305 mm
Rim Diameter 18 inches 457 mm
Sidewall Height 7.2 inches 183 mm
Circumference 101.7 inches 2584 mm
Revolutions 623 per mile 387 per km

Tire Size Calculator

The Tire Size Calculator is a convenient online tool that helps determine the correct tire dimensions for a vehicle, ensuring optimal performance and compatibility.

Tire Diameter
Tread Width
Rim Diameter
Sidewall Height
Circumference
Revolutions

305/60R18 Alternate Tire Size

Tire Size Overall Diameter Difference
285/60R18 31.5″ (799 mm) -2.9%
265/65R18 31.5″ (801 mm) -2.7%
245/70R18 31.5″ (801 mm) -2.7%
245/60R20 31.6″ (802 mm) -2.6%
295/50R20 31.7″ (804 mm) -2.3%
235/75R18 31.9″ (809 mm) -1.7%
275/55R20 31.9″ (810 mm) -1.6%
225/70R19.5 31.9″ (811 mm) -1.5%
305/50R20 32″ (814 mm) -1.1%
255/60R20 32″ (814 mm) -1.1%
255/65R19 32.1″ (815 mm) -1%
255/70R18 32.1″ (815 mm) -1%
275/65R18 32.1″ (815 mm) -1%
285/55R20 32.4″ (822 mm) -0.1%
315/50R20 32.4″ (824 mm) 0.1%
265/60R20 32.5″ (826 mm) 0.4%
285/65R18 32.6″ (827 mm) 0.5%
265/70R18 32.6″ (829 mm) 0.7%
295/55R20 32.8″ (832 mm) 1.1%
375/50R18 32.8″ (833 mm) 1.2%
325/50R20 32.8″ (834 mm) 1.3%
275/60R20 33″ (838 mm) 1.8%
245/70R19.5 33″ (839 mm) 1.9%
295/65R18 33.1″ (841 mm) 2.2%
275/70R18 33.2″ (843 mm) 2.4%
305/55R20 33.2″ (844 mm) 2.6%
375/45R20 33.3″ (846 mm) 2.8%
325/60R18 33.3″ (847 mm) 2.9%

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