225/65R18 Tire Size Specifications & Compatible Vehicles
Overall Diameter
749.7 mm
Section Width
225 mm
Sidewall Height
146.3 mm
Circumference
2355.3 mm
Revs/Mile
683
Rim Diameter
18"
Inch Equivalent
29.5x8.9R18
Rim Width (ETRTO)
6.5" – 8.5"
Compatible Vehicles
The following vehicles use 225/65R18 tires from the factory:
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 225/65R18 and may be used as replacements:
Understanding 225/65R18
The tire size 225/65R18 means the tire has a section width of 225mm, an aspect ratio of 65% (the sidewall height is 65% of the width), and fits a 18-inch rim.
Sidewall Height = 225 x 0.65 = 146.3 mm
Overall Diameter = (146.3 x 2) + (18 x 25.4) = 749.7 mm
Circumference = 749.7 x π = 2355.3 mm
Overall Diameter = (146.3 x 2) + (18 x 25.4) = 749.7 mm
Circumference = 749.7 x π = 2355.3 mm
Frequently Asked Questions
The 225/65R18 tire size is used on 4 vehicle trims including the 2025 Mitsubishi Outlander, 2024 Mitsubishi Outlander, 2023 Mitsubishi Outlander and 1 more.
A 225/65R18 tire has an overall diameter of 749.7mm (29.5 inches). The sidewall height is 146.3mm, and the total circumference is 2355mm.
For 225/65R18 tires, the ETRTO recommended rim width is 7.5". The acceptable range is 6.5" minimum to 8.5" maximum. Using a rim outside this range can cause improper bead seating and unsafe handling.
Yes, as long as the replacement tire overall diameter is within 3% of the 225/65R18 749.7mm diameter. Compatible alternatives include 195/75R18, 325/45R18, 265/60R17. Use our Tire Size Calculator to compare any two sizes.