Tire size calculator

You are now at our basic Tire Size Calculator which is still more advanced than most calculators online but not as nice as our database wheel size calculator. You can use the tire size calculator when your car in not in our database. Fill in the form and a list with possible bigger and smaller tire sizes will appear together with the possible wheel width (J) and difference in circumference. A nice feature of our tire size calculator is that you can set the tolerances for the circumference and wheel width your self. This makes it a very usefull tire size calculator for tuners! If you want you can add your car’s data to our database with the contribute form, so carowners of the same make/model as you can enjoy the wheel size calculator. Your help is much appriciated! click here.