A software used to find out the results of adjusting tire dimensions or drivetrain gearing on a automobile’s efficiency traits. It computes the connection between engine revolutions, transmission gears, differential gearing, and rolling circumference of the tires to mission automobile pace at a given engine RPM. For instance, by inputting present gear ratios and tire dimension together with proposed modifications, one can anticipate the shift in automobile pace at a selected RPM.
This calculation is important for optimizing automobile efficiency based mostly on supposed use. Altering tire diameter or ultimate drive ratio impacts acceleration, gasoline economic system, and prime pace. Understanding these penalties is essential for purposes starting from off-road modifications requiring elevated torque to fuel-efficient freeway driving benefitting from decrease engine RPMs at cruising speeds. Early iterations of this evaluation relied on guide calculations, whereas fashionable variations present streamlined digital interfaces.