225/45R18 Tire Size in Inches

225/45R18 is a metric tire size representation, which defines that the tires have a width of 225 mm, 45 is the aspect ratio and a rim diameter of 18 inches. In the imperial system the tire size 225/45R18 equates to a 25.9×8.9R18 that is commonly used in the automotive industry. So Converting 225/45R18 in inches the tires have a length of 25.9 inches, a width of 8.9 inches, a sidewall height of 4 inches and The number of complete resolutions made by the corresponding tire size is equal to 779 per mile with a circumference of 81.3 inches.

225/45R18 tire size in inches

225/45R18inchesmm
Tire Diameter25.9 inches659 mm
Tread Width8.9 inches225 mm
Rim Diameter18 inches457 mm
Sidewall Height4 inches101 mm
Circumference81.3 inches2069 mm
Revolutions779 per mile483 per km

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225/45R18 Equivalent Tire Sizes for replacement

If you are replacing your tires, always keep in mind that they are compatible with your vehicle so that the impact on the overall performance of your vehicle can be reduced. Here we have listed some tire size that is equivalent to 225/45R18 tires.

Tire Size Overall Diameter Difference
225/35R19 25.2″ (641 mm) -2.7%
205/45R18 25.2″ (641 mm) -2.7%
305/30R18 25.2″ (641 mm) -2.7%
315/25R19 25.2″ (641 mm) -2.7%
155/60R18 25.3″ (643 mm) -2.4%
265/35R18 25.3″ (643 mm) -2.4%
265/30R19 25.3″ (643 mm) -2.4%
225/30R20 25.4″ (644 mm) -2.3%
115/70R19 25.4″ (645 mm) -2.1%
235/40R18 25.4″ (645 mm) -2.1%
135/60R19 25.4″ (645 mm) -2.1%
145/65R18 25.4″ (645 mm) -2.1%
275/25R20 25.4″ (646 mm) -2%
235/35R19 25.5″ (647 mm) -1.8%
315/30R18 25.5″ (647 mm) -1.8%
135/70R18 25.5″ (647 mm) -1.8%
275/30R19 25.6″ (649 mm) -1.5%
275/35R18 25.6″ (649 mm) -1.5%
285/25R20 25.6″ (650 mm) -1.4%
235/30R20 25.6″ (650 mm) -1.4%
335/25R19 25.6″ (651 mm) -1.2%
215/45R18 25.6″ (651 mm) -1.2%
245/40R18 25.7″ (653 mm) -0.9%
285/30R19 25.8″ (655 mm) -0.6%
215/40R19 25.8″ (655 mm) -0.6%
245/35R19 25.8″ (655 mm) -0.6%
245/30R20 25.8″ (656 mm) -0.5%
295/25R20 25.8″ (656 mm) -0.5%
285/35R18 25.9″ (657 mm) -0.3%
335/30R18 25.9″ (659 mm) 0%
125/70R19 25.9″ (659 mm) 0%
305/25R20 26″ (660 mm) 0.2%
355/25R19 26″ (661 mm) 0.3%
295/30R19 26″ (661 mm) 0.3%
145/70R18 26″ (661 mm) 0.3%
255/35R19 26″ (661 mm) 0.3%
185/55R18 26″ (661 mm) 0.3%
255/40R18 26″ (661 mm) 0.3%
255/30R20 26.1″ (662 mm) 0.5%
205/50R18 26.1″ (663 mm) 0.6%
295/35R18 26.1″ (663 mm) 0.6%
225/40R19 26.1″ (663 mm) 0.6%
345/30R18 26.2″ (665 mm) 0.9%
315/25R20 26.2″ (666 mm) 1.1%
225/35R20 26.2″ (666 mm) 1.1%
305/30R19 26.3″ (667 mm) 1.2%
265/30R20 26.3″ (668 mm) 1.4%
235/45R18 26.3″ (669 mm) 1.5%
265/35R19 26.3″ (669 mm) 1.5%
265/40R18 26.3″ (669 mm) 1.5%
325/25R20 26.4″ (670 mm) 1.7%
235/40R19 26.4″ (671 mm) 1.8%
305/35R18 26.4″ (671 mm) 1.8%
235/35R20 26.5″ (672 mm) 2%
135/80R18 26.5″ (673 mm) 2.1%
315/30R19 26.5″ (673 mm) 2.1%
135/70R19 26.5″ (673 mm) 2.1%
215/50R18 26.5″ (673 mm) 2.1%
275/30R20 26.5″ (674 mm) 2.3%
155/70R18 26.6″ (675 mm) 2.4%
275/35R19 26.6″ (675 mm) 2.4%
335/25R20 26.6″ (676 mm) 2.6%
315/35R18 26.7″ (677 mm) 2.7%
245/45R18 26.7″ (677 mm) 2.7%
275/40R18 26.7″ (677 mm) 2.7%

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