Tire Size Calculator

Tire Size Calculator & Conversion

This tool can be used to compare two tire sizes.

Existing Tire Size

Example: 245/40-19

/

New Tire Size

Example: 275/30-20

/

Sidewall:

Radius (Wheel + Tire):

Diameter:

Circumference:

Revs/Mile:

Sidewall:

Radius (Wheel + Tire):

Diameter:

Circumference:

Revs/Mile:

Difference: