Tire Size Calculator
Calculate tire sizes in inches or millimeters and find alternative sizes.
Inches
Millimeters
Results for 195/55R20 Tires
Diameter
28.4"
Width
7.7"
Sidewall
4.2"
Circumference
89.3"
Revs per mile
709
Alternate Tire Sizes
20"
15"
16"
17"
18"
19"
21"
22"
23"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile