Tire Size Calculator
Calculate tire sizes in inches or millimeters and find alternative sizes.
Inches
Millimeters
Results for 265/55R20 Tires
Diameter
31.5"
Width
10.4"
Sidewall
5.7"
Circumference
98.8"
Revs per mile
641
Alternate Tire Sizes
20"
15"
16"
17"
18"
19"
21"
22"
23"
24"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile