Tire Size Calculator
Calculate tire sizes in inches or millimeters and find alternative sizes.
Inches
Millimeters
Results for 285/60R20 Tires
Diameter
33.5"
Width
11.2"
Sidewall
6.7"
Circumference
105.1"
Revs per mile
603
Alternate Tire Sizes
20"
16"
17"
18"
22"
23"
24"
26"
28"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile