155/85R18 Tires
155/85R18 Conversion
When converted to inches, 155/85R18 is equivalent to 28.4x6.1R18.
155/85R18 tire has a section width of 6.1 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 5.2 inches (132 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 28.4 inches (721 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 89.2 inches (2263.9 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. 155/85R18 tire makes 710 revolutions per mile (442 revolutions per kilometer).
| Metric | Inches | |
|---|---|---|
| Overall Diameter (Tire Height) | 721 mm | 28.4" |
| Tread Width | 155 mm | 6.1" |
| Rim Diameter | 457.2 mm | 18" |
| Sidewall Height | 132 mm | 5.2" |
| Circumference | 2263.9 mm | 89.2" |
| Revolutions | 442 per km | 710 per mile |
| Best Prices on 155/85R18 Tires | |
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155/85R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 155/85R18 tire can be replaced with 64 compatible tire sizes. Select optional plus size to see its specs.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 175/55R20 | 27.6" (700 mm) | -2.9% |
| 275/35R20 | 27.6" (700 mm) | -2.9% |
| 305/40R18 | 27.6" (701 mm) | -2.8% |
| 155/70R19 | 27.6" (701 mm) | -2.8% |
| 215/45R20 | 27.6" (702 mm) | -2.6% |
| 275/40R19 | 27.7" (703 mm) | -2.5% |
| 205/60R18 | 27.7" (703 mm) | -2.5% |
| 315/35R19 | 27.7" (703 mm) | -2.5% |
| 245/45R19 | 27.7" (703 mm) | -2.5% |
| 245/50R18 | 27.7" (703 mm) | -2.5% |
| 145/85R18 | 27.7" (703 mm) | -2.5% |
| 195/50R20 | 27.7" (704 mm) | -2.4% |
| 325/30R20 | 27.7" (704 mm) | -2.4% |
| 245/40R20 | 27.7" (704 mm) | -2.4% |
| 275/45R18 | 27.8" (705 mm) | -2.2% |
| 155/80R18 | 27.8" (705 mm) | -2.2% |
| 225/55R18 | 27.8" (705 mm) | -2.2% |
| 165/60R20 | 27.8" (706 mm) | -2.1% |
| 285/35R20 | 27.9" (708 mm) | -1.8% |
| 315/40R18 | 27.9" (709 mm) | -1.7% |
| 155/65R20 | 28" (710 mm) | -1.5% |
| 225/45R20 | 28" (710 mm) | -1.5% |
| 335/30R20 | 28" (710 mm) | -1.5% |
| 285/40R19 | 28" (711 mm) | -1.4% |
| 255/40R20 | 28" (712 mm) | -1.2% |
| 255/50R18 | 28.1" (713 mm) | -1.1% |
| 255/45R19 | 28.1" (713 mm) | -1.1% |
| 285/45R18 | 28.1" (713 mm) | -1.1% |
| 295/35R20 | 28.1" (714 mm) | -1% |
| 145/80R19 | 28.1" (715 mm) | -0.8% |
| 235/55R18 | 28.1" (715 mm) | -0.8% |
| 345/30R20 | 28.2" (716 mm) | -0.7% |
| 295/40R19 | 28.3" (719 mm) | -0.3% |
| 235/50R19 | 28.3" (719 mm) | -0.3% |
| 235/45R20 | 28.3" (720 mm) | -0.1% |
| 265/40R20 | 28.3" (720 mm) | -0.1% |
| 265/45R19 | 28.4" (721 mm) | 0% |
| 305/35R20 | 28.4" (722 mm) | 0.1% |
| 265/50R18 | 28.5" (723 mm) | 0.3% |
| 295/45R18 | 28.5" (723 mm) | 0.3% |
| 345/35R19 | 28.5" (725 mm) | 0.6% |
| 245/55R18 | 28.6" (727 mm) | 0.8% |
| 225/60R18 | 28.6" (727 mm) | 0.8% |
| 315/35R20 | 28.7" (728 mm) | 1% |
| 275/40R20 | 28.7" (728 mm) | 1% |
| 245/45R20 | 28.7" (728 mm) | 1% |
| 245/50R19 | 28.7" (729 mm) | 1.1% |
| 225/55R19 | 28.8" (731 mm) | 1.4% |
| 155/80R19 | 28.8" (731 mm) | 1.4% |
| 275/45R19 | 28.8" (731 mm) | 1.4% |
| 305/45R18 | 28.8" (731 mm) | 1.4% |
| 275/50R18 | 28.9" (733 mm) | 1.7% |
| 315/40R19 | 28.9" (735 mm) | 1.9% |
| 325/35R20 | 29" (736 mm) | 2.1% |
| 285/40R20 | 29" (736 mm) | 2.1% |
| 155/90R18 | 29" (737 mm) | 2.2% |
| 255/55R18 | 29" (737 mm) | 2.2% |
| 175/80R18 | 29" (737 mm) | 2.2% |
| 255/45R20 | 29.1" (738 mm) | 2.4% |
| 255/50R19 | 29.1" (739 mm) | 2.5% |
| 285/45R19 | 29.1" (739 mm) | 2.5% |
| 235/60R18 | 29.1" (739 mm) | 2.5% |
| 145/80R20 | 29.1" (740 mm) | 2.6% |
| 235/55R19 | 29.2" (741 mm) | 2.8% |