TirulatorTire Size Calculator
Tire Size Visualizer
Width
Dia.
Rim
Wall
Revs/km
Circ.
Width
How to Use?
Just input any Tire Size and click on the «Calculate» button. Our calculator will instantly calculate the tire diameter, width, sidewall, circumference, revolutions per mile, and rim width, and then display the data in a table and show a visual example with alternate sizes.How to Find Your Tire Size
Driver Door Jamb: Open the driver's door and look for a white and yellow sticker.Tire Sidewall: Look at the outer side of your current tire for printed numbers.
Owner's Manual: Check your glove box book.
Reading a Tire Code (Example: P215/60R17)
P: Passenger vehicle type.215: Width in millimeters from side to side.
60: Aspect ratio, meaning sidewall height is 60% of the width.
R: Radial internal construction.
17: Wheel or rim diameter in inches
Check out our Educational Center to learn all about tires and wheels.