275/55R18 Tires
275/55R18 Conversion
When converted to inches, 275/55R18 is equivalent to 29.9x10.8R18.
275/55R18 tire has a section width of 10.8 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 5.9 inches (151 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 29.9 inches (759 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 93.9 inches (2383.3 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. 275/55R18 tire makes 675 revolutions per mile (420 revolutions per kilometer).
| Metric | Inches | |
|---|---|---|
| Overall Diameter (Tire Height) | 759 mm | 29.9" |
| Tread Width | 275 mm | 10.8" |
| Rim Diameter | 457.2 mm | 18" |
| Sidewall Height | 151 mm | 5.9" |
| Circumference | 2383.3 mm | 93.9" |
| Revolutions | 420 per km | 675 per mile |
| Best Prices on 275/55R18 Tires | |
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 from $234.86 |
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 from $208.99 |
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 from $174.97 |
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275/55R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 275/55R18 tire can be replaced with 41 compatible tire sizes. Select optional plus size to see its specs.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 155/90R18 | 29" (737 mm) | -2.9% |
| 255/55R18 | 29" (737 mm) | -2.9% |
| 175/80R18 | 29" (737 mm) | -2.9% |
| 255/45R20 | 29.1" (738 mm) | -2.8% |
| 235/60R18 | 29.1" (739 mm) | -2.6% |
| 255/50R19 | 29.1" (739 mm) | -2.6% |
| 285/45R19 | 29.1" (739 mm) | -2.6% |
| 145/80R20 | 29.1" (740 mm) | -2.5% |
| 235/55R19 | 29.2" (741 mm) | -2.4% |
| 285/50R18 | 29.3" (743 mm) | -2.1% |
| 235/50R20 | 29.3" (744 mm) | -2% |
| 295/40R20 | 29.3" (744 mm) | -2% |
| 265/45R20 | 29.4" (746 mm) | -1.7% |
| 295/45R19 | 29.5" (749 mm) | -1.3% |
| 265/55R18 | 29.5" (749 mm) | -1.3% |
| 265/50R19 | 29.5" (749 mm) | -1.3% |
| 325/45R18 | 29.5" (749 mm) | -1.3% |
| 225/65R18 | 29.5" (749 mm) | -1.3% |
| 245/60R18 | 29.6" (751 mm) | -1.1% |
| 305/40R20 | 29.6" (752 mm) | -0.9% |
| 245/55R19 | 29.6" (753 mm) | -0.8% |
| 245/50R20 | 29.7" (754 mm) | -0.7% |
| 165/90R18 | 29.7" (755 mm) | -0.5% |
| 275/45R20 | 29.8" (756 mm) | -0.4% |
| 275/50R19 | 29.9" (759 mm) | 0% |
| 255/60R18 | 30" (763 mm) | 0.5% |
| 175/80R19 | 30" (763 mm) | 0.5% |
| 235/65R18 | 30" (763 mm) | 0.5% |
| 255/55R19 | 30" (763 mm) | 0.5% |
| 255/50R20 | 30.1" (764 mm) | 0.7% |
| 285/45R20 | 30.1" (764 mm) | 0.7% |
| 235/60R19 | 30.1" (765 mm) | 0.8% |
| 235/55R20 | 30.2" (766 mm) | 0.9% |
| 285/55R18 | 30.4" (771 mm) | 1.6% |
| 175/90R18 | 30.4" (773 mm) | 1.8% |
| 265/50R20 | 30.5" (774 mm) | 2% |
| 295/45R20 | 30.5" (774 mm) | 2% |
| 245/65R18 | 30.5" (775 mm) | 2.1% |
| 265/60R18 | 30.5" (775 mm) | 2.1% |
| 265/55R19 | 30.5" (775 mm) | 2.1% |
| 165/90R19 | 30.7" (781 mm) | 2.9% |