Tire Size Calculator

When changing tires on a vehicle, you must compare the overall diameters of the tires to make sure that the ride gearing and height remain the same. This calculator helps you to ensure that you do not exceed the differences in diameters that are deemed to be acceptable by determining the maximum difference in percentage.

This calculator calculates the actual diameter of a tire and the percentage change in diameter across two tires. What sets this tire size calculator apart from the available alternatives is that it also computes the difference in pace at which the vehicle can reach a given speed between two different sets of tires.

You may also like to try our online power to weight ratio calculator to determine the power-to-weight ratio of any vehicle.