Tire Size Calculator
Calculate tire sizes in inches or millimeters and find alternative sizes.
Inches
Millimeters
Results for 215/45R15 Tires
Diameter
22.6"
Width
8.5"
Sidewall
3.8"
Circumference
71"
Revs per mile
892
Alternate Tire Sizes
15"
13"
14"
16"
17"
18"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile