305/70R18 Tires
305/70R18 Conversion
When converted to inches, 305/70R18 is equivalent to 34.8x12R18.
305/70R18 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 18 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 34.8 inches (885 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 109.3 inches (2778.9 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. 305/70R18 tire makes 580 revolutions per mile (360 revolutions per kilometer).
| Metric | Inches | |
|---|---|---|
| Overall Diameter (Tire Height) | 885 mm | 34.8" |
| Tread Width | 305 mm | 12" |
| Rim Diameter | 457.2 mm | 18" |
| Sidewall Height | 214 mm | 8.4" |
| Circumference | 2778.9 mm | 109.3" |
| Revolutions | 360 per km | 580 per mile |
| Best Prices on 305/70R18 Tires | |
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305/70R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 305/70R18 tire can be replaced with 16 compatible tire sizes. Select optional plus size to see its specs.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 295/60R20 | 33.9" (862 mm) | -2.6% |
| 355/50R20 | 34" (864 mm) | -2.4% |
| 275/65R20 | 34.1" (866 mm) | -2.1% |
| 295/70R18 | 34.3" (871 mm) | -1.6% |
| 345/60R18 | 34.3" (871 mm) | -1.6% |
| 305/60R20 | 34.4" (874 mm) | -1.2% |
| 335/55R20 | 34.5" (876 mm) | -1% |
| 285/65R20 | 34.6" (878 mm) | -0.8% |
| 325/65R18 | 34.6" (879 mm) | -0.7% |
| 285/75R18 | 34.8" (885 mm) | 0% |
| 315/60R20 | 34.9" (886 mm) | 0.1% |
| 295/65R20 | 35.1" (892 mm) | 0.8% |
| 275/80R18 | 35.3" (897 mm) | 1.4% |
| 325/60R20 | 35.4" (898 mm) | 1.5% |
| 315/70R18 | 35.4" (899 mm) | 1.6% |
| 375/60R18 | 35.7" (907 mm) | 2.5% |