tire calculator

use our tire size tools to calculate specs, speed, gear ratios and more. browse tires by size, vehicle, or brand and compare prices online all in one place.

our tire size calculator will help you estimate the difference of external dimensions of the wheels, height clearance, revolutions per mile and other characteristics, when installing tires of other sizes on your vehicle. this calculator allows you to tell the difference between the tires in inches, centimeters, and percentages.