Passenger Tire Power Consumption 710575

The rolling resistance of a tire can have a marked effect on such factors as gasoline mileage and high speed durability. In an effort to understand better the mechanisms involved, 80 tires were analyzed. This analysis resulted in dividing the rolling resistance into a component (Ra) independent of speed, and a component (Rb), which is very speed dependent. The body of this paper discusses the effect of operating conditions and tire design variations on both of these components.