225/40R18 Tires

Find out if 225/40R18 fits your vehicle. Check out 225/40R18 tire size specifications and suggested replacement sizes.

What are 225/40R18 dimensions?

225/40R18 tire has a section width of 8.9 inches, a rim diameter of 18 inches, a sidewall height of 3.5 inches, an overall diameter of 25.1 inches, and a circumference of 78.8 inches, making 804 revolutions per mile.

225/40R18 Section Width
225/40R18 Tire Side
Tire Circumference
804 Revs/Mile
Metric Inches
Overall Diameter 637 mm 25.1"
Tread Width 225 mm 8.9"
Aspect Ratio 40 %
Rim Diameter 457.2 mm 18"
Sidewall Height 90 mm 3.5"
Circumference 2000.2 mm 78.8"
Revolutions 500 per km 804 per mile

What is 225/40R18 in inches?

225/40R18 in inches is equivalent to 25.1x8.9R18.

What are replacement tire sizes for 225/40R18?

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 225/40R18 size.

What cars does 225/40R18 tire size fit?

There are 83 car models that use 225/40R18 as original equipment tire size. Select your vehicle model for more details.