285/40R18 Tires
285/40R18 Conversion
When converted to inches, 285/40R18 is equivalent to 27x11.2R18.
285/40R18 tire has a section width of 11.2 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 4.5 inches (114 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 27 inches (685 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 84.8 inches (2150.9 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. 285/40R18 tire makes 747 revolutions per mile (465 revolutions per kilometer).



Metric | Inches | |
---|---|---|
Overall Diameter (Tire Height) | 685 mm | 27" |
Tread Width | 285 mm | 11.2" |
Rim Diameter | 457.2 mm | 18" |
Sidewall Height | 114 mm | 4.5" |
Circumference | 2150.9 mm | 84.8" |
Revolutions | 465 per km | 747 per mile |
Best Prices on 285/40R18 Tires | |
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285/40R18 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 285/40R18 tire can be replaced with 77 compatible tire sizes. Select optional plus size to see its specs.
Tire Size | Overall Diameter | Difference |
---|---|---|
345/30R18 | 26.2" (665 mm) | -2.9% |
315/25R20 | 26.2" (666 mm) | -2.8% |
225/35R20 | 26.2" (666 mm) | -2.8% |
305/30R19 | 26.3" (667 mm) | -2.6% |
265/30R20 | 26.3" (668 mm) | -2.5% |
265/40R18 | 26.3" (669 mm) | -2.3% |
265/35R19 | 26.3" (669 mm) | -2.3% |
235/45R18 | 26.3" (669 mm) | -2.3% |
325/25R20 | 26.4" (670 mm) | -2.2% |
305/35R18 | 26.4" (671 mm) | -2% |
235/40R19 | 26.4" (671 mm) | -2% |
235/35R20 | 26.5" (672 mm) | -1.9% |
315/30R19 | 26.5" (673 mm) | -1.8% |
215/50R18 | 26.5" (673 mm) | -1.8% |
135/80R18 | 26.5" (673 mm) | -1.8% |
135/70R19 | 26.5" (673 mm) | -1.8% |
275/30R20 | 26.5" (674 mm) | -1.6% |
275/35R19 | 26.6" (675 mm) | -1.5% |
155/70R18 | 26.6" (675 mm) | -1.5% |
335/25R20 | 26.6" (676 mm) | -1.3% |
245/45R18 | 26.7" (677 mm) | -1.2% |
275/40R18 | 26.7" (677 mm) | -1.2% |
315/35R18 | 26.7" (677 mm) | -1.2% |
325/30R19 | 26.7" (679 mm) | -0.9% |
245/40R19 | 26.7" (679 mm) | -0.9% |
345/25R20 | 26.8" (680 mm) | -0.7% |
245/35R20 | 26.8" (680 mm) | -0.7% |
285/30R20 | 26.8" (680 mm) | -0.7% |
145/60R20 | 26.9" (682 mm) | -0.4% |
285/35R19 | 26.9" (683 mm) | -0.3% |
205/55R18 | 26.9" (683 mm) | -0.3% |
225/50R18 | 26.9" (683 mm) | -0.3% |
325/35R18 | 27" (685 mm) | 0% |
225/45R19 | 27" (685 mm) | 0% |
335/30R19 | 27" (685 mm) | 0% |
255/35R20 | 27" (686 mm) | 0.1% |
295/30R20 | 27" (686 mm) | 0.1% |
255/45R18 | 27" (687 mm) | 0.3% |
255/40R19 | 27" (687 mm) | 0.3% |
225/40R20 | 27.1" (688 mm) | 0.4% |
295/35R19 | 27.1" (689 mm) | 0.6% |
165/70R18 | 27.1" (689 mm) | 0.6% |
145/80R18 | 27.1" (689 mm) | 0.6% |
345/30R19 | 27.2" (691 mm) | 0.9% |
305/30R20 | 27.2" (692 mm) | 1% |
295/40R18 | 27.3" (693 mm) | 1.2% |
215/55R18 | 27.3" (693 mm) | 1.2% |
175/60R19 | 27.3" (693 mm) | 1.2% |
235/50R18 | 27.3" (693 mm) | 1.2% |
265/35R20 | 27.3" (694 mm) | 1.3% |
155/60R20 | 27.3" (694 mm) | 1.3% |
265/40R19 | 27.4" (695 mm) | 1.5% |
265/45R18 | 27.4" (695 mm) | 1.5% |
235/45R19 | 27.4" (695 mm) | 1.5% |
145/65R20 | 27.4" (696 mm) | 1.6% |
235/40R20 | 27.4" (696 mm) | 1.6% |
305/35R19 | 27.4" (697 mm) | 1.8% |
355/30R19 | 27.4" (697 mm) | 1.8% |
315/30R20 | 27.5" (698 mm) | 1.9% |
345/35R18 | 27.5" (699 mm) | 2% |
175/55R20 | 27.6" (700 mm) | 2.2% |
275/35R20 | 27.6" (700 mm) | 2.2% |
305/40R18 | 27.6" (701 mm) | 2.3% |
155/70R19 | 27.6" (701 mm) | 2.3% |
215/45R20 | 27.6" (702 mm) | 2.5% |
145/85R18 | 27.7" (703 mm) | 2.6% |
315/35R19 | 27.7" (703 mm) | 2.6% |
205/60R18 | 27.7" (703 mm) | 2.6% |
245/50R18 | 27.7" (703 mm) | 2.6% |
275/40R19 | 27.7" (703 mm) | 2.6% |
245/45R19 | 27.7" (703 mm) | 2.6% |
325/30R20 | 27.7" (704 mm) | 2.8% |
195/50R20 | 27.7" (704 mm) | 2.8% |
245/40R20 | 27.7" (704 mm) | 2.8% |
275/45R18 | 27.8" (705 mm) | 2.9% |
225/55R18 | 27.8" (705 mm) | 2.9% |
155/80R18 | 27.8" (705 mm) | 2.9% |