145/80R18 Tires

145/80R18 Conversion

When converted to inches, 145/80R18 is equivalent to 27.1x5.7R18.

145/80R18 tire has a section width of 5.7 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 4.6 inches (116 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 27.1 inches (689 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 85.1 inches (2163.5 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. 145/80R18 tire makes 745 revolutions per mile (462 revolutions per kilometer).

145/80R18 Section Width
5.7"
27.1"
145/80R18 Tire Side
Tire Circumference
85.1"
18"
4.6"
745 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 689 mm 27.1"
Tread Width 145 mm 5.7"
Rim Diameter 457.2 mm 18"
Sidewall Height 116 mm 4.6"
Circumference 2163.5 mm 85.1"
Revolutions 462 per km 745 per mile

145/80R18 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 145/80R18 tire can be replaced with 75 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
265/35R19 26.3" (669 mm) -2.9%
265/40R18 26.3" (669 mm) -2.9%
235/45R18 26.3" (669 mm) -2.9%
325/25R20 26.4" (670 mm) -2.8%
235/40R19 26.4" (671 mm) -2.6%
305/35R18 26.4" (671 mm) -2.6%
235/35R20 26.5" (672 mm) -2.5%
215/50R18 26.5" (673 mm) -2.3%
135/70R19 26.5" (673 mm) -2.3%
315/30R19 26.5" (673 mm) -2.3%
135/80R18 26.5" (673 mm) -2.3%
275/30R20 26.5" (674 mm) -2.2%
275/35R19 26.6" (675 mm) -2%
155/70R18 26.6" (675 mm) -2%
335/25R20 26.6" (676 mm) -1.9%
275/40R18 26.7" (677 mm) -1.7%
315/35R18 26.7" (677 mm) -1.7%
245/45R18 26.7" (677 mm) -1.7%
325/30R19 26.7" (679 mm) -1.5%
245/40R19 26.7" (679 mm) -1.5%
245/35R20 26.8" (680 mm) -1.3%
285/30R20 26.8" (680 mm) -1.3%
345/25R20 26.8" (680 mm) -1.3%
145/60R20 26.9" (682 mm) -1%
225/50R18 26.9" (683 mm) -0.9%
285/35R19 26.9" (683 mm) -0.9%
205/55R18 26.9" (683 mm) -0.9%
335/30R19 27" (685 mm) -0.6%
285/40R18 27" (685 mm) -0.6%
325/35R18 27" (685 mm) -0.6%
225/45R19 27" (685 mm) -0.6%
255/35R20 27" (686 mm) -0.4%
295/30R20 27" (686 mm) -0.4%
255/40R19 27" (687 mm) -0.3%
255/45R18 27" (687 mm) -0.3%
225/40R20 27.1" (688 mm) -0.1%
165/70R18 27.1" (689 mm) 0%
295/35R19 27.1" (689 mm) 0%
345/30R19 27.2" (691 mm) 0.3%
305/30R20 27.2" (692 mm) 0.4%
235/50R18 27.3" (693 mm) 0.6%
295/40R18 27.3" (693 mm) 0.6%
175/60R19 27.3" (693 mm) 0.6%
215/55R18 27.3" (693 mm) 0.6%
265/35R20 27.3" (694 mm) 0.7%
155/60R20 27.3" (694 mm) 0.7%
265/45R18 27.4" (695 mm) 0.9%
235/45R19 27.4" (695 mm) 0.9%
265/40R19 27.4" (695 mm) 0.9%
145/65R20 27.4" (696 mm) 1%
235/40R20 27.4" (696 mm) 1%
305/35R19 27.4" (697 mm) 1.2%
355/30R19 27.4" (697 mm) 1.2%
315/30R20 27.5" (698 mm) 1.3%
345/35R18 27.5" (699 mm) 1.5%
175/55R20 27.6" (700 mm) 1.6%
275/35R20 27.6" (700 mm) 1.6%
155/70R19 27.6" (701 mm) 1.7%
305/40R18 27.6" (701 mm) 1.7%
215/45R20 27.6" (702 mm) 1.9%
145/85R18 27.7" (703 mm) 2%
245/50R18 27.7" (703 mm) 2%
245/45R19 27.7" (703 mm) 2%
315/35R19 27.7" (703 mm) 2%
275/40R19 27.7" (703 mm) 2%
205/60R18 27.7" (703 mm) 2%
245/40R20 27.7" (704 mm) 2.2%
195/50R20 27.7" (704 mm) 2.2%
325/30R20 27.7" (704 mm) 2.2%
155/80R18 27.8" (705 mm) 2.3%
225/55R18 27.8" (705 mm) 2.3%
275/45R18 27.8" (705 mm) 2.3%
165/60R20 27.8" (706 mm) 2.5%
285/35R20 27.9" (708 mm) 2.8%
315/40R18 27.9" (709 mm) 2.9%