Tire Size Calculator
Calculate tire sizes in inches or millimeters and find alternative sizes.
Inches
Millimeters
Results for 245/35R21 Tires
Diameter
27.8"
Width
9.6"
Sidewall
3.4"
Circumference
87.1"
Revs per mile
727
Alternate Tire Sizes
21"
14"
15"
16"
17"
18"
19"
20"
22"
Tire Size
Diameter
Width
Sidewall
Circumference
Revs per mile