305/45R18 Tires
305/45R18 Conversion
When converted to inches, 305/45R18 is equivalent to 28.8x12R18.
305/45R18 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 5.4 inches (137 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 28.8 inches (731 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 90.4 inches (2295.3 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. 305/45R18 tire makes 701 revolutions per mile (436 revolutions per kilometer).
| Metric | Inches | |
|---|---|---|
| Overall Diameter (Tire Height) | 731 mm | 28.8" |
| Tread Width | 305 mm | 12" |
| Rim Diameter | 457.2 mm | 18" |
| Sidewall Height | 137 mm | 5.4" |
| Circumference | 2295.3 mm | 90.4" |
| Revolutions | 436 per km | 701 per mile |
| Best Prices on 305/45R18 Tires | |
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305/45R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 305/45R18 tire can be replaced with 55 compatible tire sizes. Select optional plus size to see its specs.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 225/45R20 | 28" (710 mm) | -2.9% |
| 155/65R20 | 28" (710 mm) | -2.9% |
| 335/30R20 | 28" (710 mm) | -2.9% |
| 285/40R19 | 28" (711 mm) | -2.7% |
| 255/40R20 | 28" (712 mm) | -2.6% |
| 255/45R19 | 28.1" (713 mm) | -2.5% |
| 255/50R18 | 28.1" (713 mm) | -2.5% |
| 285/45R18 | 28.1" (713 mm) | -2.5% |
| 295/35R20 | 28.1" (714 mm) | -2.3% |
| 145/80R19 | 28.1" (715 mm) | -2.2% |
| 235/55R18 | 28.1" (715 mm) | -2.2% |
| 345/30R20 | 28.2" (716 mm) | -2.1% |
| 235/50R19 | 28.3" (719 mm) | -1.6% |
| 295/40R19 | 28.3" (719 mm) | -1.6% |
| 265/40R20 | 28.3" (720 mm) | -1.5% |
| 235/45R20 | 28.3" (720 mm) | -1.5% |
| 155/85R18 | 28.4" (721 mm) | -1.4% |
| 265/45R19 | 28.4" (721 mm) | -1.4% |
| 305/35R20 | 28.4" (722 mm) | -1.2% |
| 265/50R18 | 28.5" (723 mm) | -1.1% |
| 295/45R18 | 28.5" (723 mm) | -1.1% |
| 345/35R19 | 28.5" (725 mm) | -0.8% |
| 225/60R18 | 28.6" (727 mm) | -0.5% |
| 245/55R18 | 28.6" (727 mm) | -0.5% |
| 315/35R20 | 28.7" (728 mm) | -0.4% |
| 245/45R20 | 28.7" (728 mm) | -0.4% |
| 275/40R20 | 28.7" (728 mm) | -0.4% |
| 245/50R19 | 28.7" (729 mm) | -0.3% |
| 225/55R19 | 28.8" (731 mm) | 0% |
| 275/45R19 | 28.8" (731 mm) | 0% |
| 155/80R19 | 28.8" (731 mm) | 0% |
| 275/50R18 | 28.9" (733 mm) | 0.3% |
| 315/40R19 | 28.9" (735 mm) | 0.5% |
| 285/40R20 | 29" (736 mm) | 0.7% |
| 325/35R20 | 29" (736 mm) | 0.7% |
| 155/90R18 | 29" (737 mm) | 0.8% |
| 255/55R18 | 29" (737 mm) | 0.8% |
| 175/80R18 | 29" (737 mm) | 0.8% |
| 255/45R20 | 29.1" (738 mm) | 1% |
| 255/50R19 | 29.1" (739 mm) | 1.1% |
| 235/60R18 | 29.1" (739 mm) | 1.1% |
| 285/45R19 | 29.1" (739 mm) | 1.1% |
| 145/80R20 | 29.1" (740 mm) | 1.2% |
| 235/55R19 | 29.2" (741 mm) | 1.4% |
| 285/50R18 | 29.3" (743 mm) | 1.6% |
| 235/50R20 | 29.3" (744 mm) | 1.8% |
| 295/40R20 | 29.3" (744 mm) | 1.8% |
| 265/45R20 | 29.4" (746 mm) | 2.1% |
| 295/45R19 | 29.5" (749 mm) | 2.5% |
| 225/65R18 | 29.5" (749 mm) | 2.5% |
| 325/45R18 | 29.5" (749 mm) | 2.5% |
| 265/50R19 | 29.5" (749 mm) | 2.5% |
| 265/55R18 | 29.5" (749 mm) | 2.5% |
| 245/60R18 | 29.6" (751 mm) | 2.7% |
| 305/40R20 | 29.6" (752 mm) | 2.9% |