This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to supply information about the motion of the wheel and tire on a vehicle, based on the data entered. Enter the vehicle speed. Select the rim size from the drop down box or manually enter the rim diameter size (not the width). Then select tire body size, the perpendicular distance from the outside vertical edge of the rim to the surface of the tire tread, or manually enter that value. Each new value recalculates the information. The results are the RPM (revolutions per minute) of the tire, the RPS (revolutions per second) of the tire, and the centrifugal force of the surface of the tire, at the tread, in G forces.
Special thanks to Rameen Aryanpur of Tufts University for his contributions to this calculator.
