Tire Size Calculator
Calculate tire sizes in inches or millimeters and find alternative sizes.
Inches
Millimeters
Results for 305/25R20 Tires
Diameter
26"
Width
12"
Sidewall
3"
Circumference
81.7"
Revs per mile
776
Alternate Tire Sizes
20"
14"
15"
16"
17"
18"
19"
21"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile