325/65R18 Tires

325/65R18 Conversion

When converted to inches, 325/65R18 is equivalent to 34.6x12.8R18.

325/65R18 tire has a section width of 12.8 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 8.3 inches (211 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 34.6 inches (879 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 108.6 inches (2760.1 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. 325/65R18 tire makes 583 revolutions per mile (362 revolutions per kilometer).

325/65R18 Section Width
12.8"
34.6"
325/65R18 Tire Side
Tire Circumference
108.6"
18"
8.3"
583 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 879 mm 34.6"
Tread Width 325 mm 12.8"
Rim Diameter 457.2 mm 18"
Sidewall Height 211 mm 8.3"
Circumference 2760.1 mm 108.6"
Revolutions 362 per km 583 per mile

325/65R18 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 325/65R18 tire can be replaced with 17 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
305/65R18 33.6" (853 mm) -3%
285/70R18 33.7" (857 mm) -2.5%
295/60R20 33.9" (862 mm) -1.9%
355/50R20 34" (864 mm) -1.7%
275/65R20 34.1" (866 mm) -1.5%
345/60R18 34.3" (871 mm) -0.9%
295/70R18 34.3" (871 mm) -0.9%
305/60R20 34.4" (874 mm) -0.6%
335/55R20 34.5" (876 mm) -0.3%
285/65R20 34.6" (878 mm) -0.1%
285/75R18 34.8" (885 mm) 0.7%
305/70R18 34.8" (885 mm) 0.7%
315/60R20 34.9" (886 mm) 0.8%
295/65R20 35.1" (892 mm) 1.5%
275/80R18 35.3" (897 mm) 2%
325/60R20 35.4" (898 mm) 2.2%
315/70R18 35.4" (899 mm) 2.3%