225/45R18 Tires
Find out if 225/45R18 fits your vehicle. Check out 225/45R18 tire size specifications and suggested replacement sizes.
What are 225/45R18 dimensions?
225/45R18 tire has a section width of 8.9 inches, a rim diameter of 18 inches, a sidewall height of 4 inches, an overall diameter of 25.9 inches, and a circumference of 81.3 inches, making 779 revolutions per mile.

8.9"
25.9"


81.3"
18"
4"
779 Revs/Mile
Metric | Inches | |
---|---|---|
Overall Diameter | 659 mm | 25.9" |
Tread Width | 225 mm | 8.9" |
Aspect Ratio | 45 % | |
Rim Diameter | 457.2 mm | 18" |
Sidewall Height | 101 mm | 4" |
Circumference | 2069.3 mm | 81.3" |
Revolutions | 483 per km | 779 per mile |
What is 225/45R18 in inches?
225/45R18 in inches is equivalent to 25.9x8.9R18.
What are replacement tire sizes for 225/45R18?
Replacement tires have to be within 3% of the original tire's overall diameter to ensure safe drive and proper speedometer readings. Below is a list of similar tire sizes that are within optimal characteristics of the original 225/45R18 size.
What cars does 225/45R18 tire size fit?
There are 65 car models that use 225/45R18 as original equipment tire size. Select your vehicle model for more details.
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