Tire Size Calculator
Calculate tire sizes in inches or millimeters and find alternative sizes.
Inches
Millimeters
Results for 275/40R20 Tires
Diameter
28.7"
Width
10.8"
Sidewall
4.3"
Circumference
90"
Revs per mile
704
Alternate Tire Sizes
20"
15"
16"
17"
18"
19"
21"
22"
23"
24"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile