Transient Speed and Temperature Effects on Rolling Loss of Passenger Car Tires

The effect of tire speed and temperature on rolling loss is described by two new tire characteristics: The speed factor indicates the relative change of rolling loss at a rapid speed change, and the temperature factor indicates the relative change of rolling loss at a tire temperature change. The two factors are derived from a general relation between rolling loss, tire temperature, and speed; this relation is valid for steady-state as well as transient conditions.