235/45R18 Tires

235/45R18 Conversion

When converted to inches, 235/45R18 is equivalent to 26.3x9.3R18.

235/45R18 tire has a section width of 9.3 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 4.2 inches (106 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 26.3 inches (669 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 82.6 inches (2100.7 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. 235/45R18 tire makes 767 revolutions per mile (476 revolutions per kilometer).

235/45R18 Section Width
9.3"
26.3"
235/45R18 Tire Side
Tire Circumference
82.6"
18"
4.2"
767 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 669 mm 26.3"
Tread Width 235 mm 9.3"
Rim Diameter 457.2 mm 18"
Sidewall Height 106 mm 4.2"
Circumference 2100.7 mm 82.6"
Revolutions 476 per km 767 per mile

235/45R18 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 235/45R18 tire can be replaced with 70 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
275/30R19 25.6" (649 mm) -3%
275/35R18 25.6" (649 mm) -3%
235/30R20 25.6" (650 mm) -2.8%
285/25R20 25.6" (650 mm) -2.8%
215/45R18 25.6" (651 mm) -2.7%
335/25R19 25.6" (651 mm) -2.7%
245/40R18 25.7" (653 mm) -2.4%
245/35R19 25.8" (655 mm) -2.1%
285/30R19 25.8" (655 mm) -2.1%
215/40R19 25.8" (655 mm) -2.1%
295/25R20 25.8" (656 mm) -1.9%
245/30R20 25.8" (656 mm) -1.9%
285/35R18 25.9" (657 mm) -1.8%
125/70R19 25.9" (659 mm) -1.5%
335/30R18 25.9" (659 mm) -1.5%
225/45R18 25.9" (659 mm) -1.5%
305/25R20 26" (660 mm) -1.3%
255/35R19 26" (661 mm) -1.2%
295/30R19 26" (661 mm) -1.2%
145/70R18 26" (661 mm) -1.2%
255/40R18 26" (661 mm) -1.2%
185/55R18 26" (661 mm) -1.2%
355/25R19 26" (661 mm) -1.2%
255/30R20 26.1" (662 mm) -1%
205/50R18 26.1" (663 mm) -0.9%
295/35R18 26.1" (663 mm) -0.9%
225/40R19 26.1" (663 mm) -0.9%
345/30R18 26.2" (665 mm) -0.6%
225/35R20 26.2" (666 mm) -0.4%
315/25R20 26.2" (666 mm) -0.4%
305/30R19 26.3" (667 mm) -0.3%
265/30R20 26.3" (668 mm) -0.1%
265/40R18 26.3" (669 mm) 0%
265/35R19 26.3" (669 mm) 0%
325/25R20 26.4" (670 mm) 0.1%
305/35R18 26.4" (671 mm) 0.3%
235/40R19 26.4" (671 mm) 0.3%
235/35R20 26.5" (672 mm) 0.4%
315/30R19 26.5" (673 mm) 0.6%
135/80R18 26.5" (673 mm) 0.6%
215/50R18 26.5" (673 mm) 0.6%
135/70R19 26.5" (673 mm) 0.6%
275/30R20 26.5" (674 mm) 0.7%
275/35R19 26.6" (675 mm) 0.9%
155/70R18 26.6" (675 mm) 0.9%
335/25R20 26.6" (676 mm) 1%
275/40R18 26.7" (677 mm) 1.2%
315/35R18 26.7" (677 mm) 1.2%
245/45R18 26.7" (677 mm) 1.2%
325/30R19 26.7" (679 mm) 1.5%
245/40R19 26.7" (679 mm) 1.5%
245/35R20 26.8" (680 mm) 1.6%
345/25R20 26.8" (680 mm) 1.6%
285/30R20 26.8" (680 mm) 1.6%
145/60R20 26.9" (682 mm) 1.9%
205/55R18 26.9" (683 mm) 2.1%
225/50R18 26.9" (683 mm) 2.1%
285/35R19 26.9" (683 mm) 2.1%
335/30R19 27" (685 mm) 2.4%
225/45R19 27" (685 mm) 2.4%
285/40R18 27" (685 mm) 2.4%
325/35R18 27" (685 mm) 2.4%
255/35R20 27" (686 mm) 2.5%
295/30R20 27" (686 mm) 2.5%
255/45R18 27" (687 mm) 2.7%
255/40R19 27" (687 mm) 2.7%
225/40R20 27.1" (688 mm) 2.8%
145/80R18 27.1" (689 mm) 3%
165/70R18 27.1" (689 mm) 3%
295/35R19 27.1" (689 mm) 3%