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Use of passenger and light truck vehicle fleets is likely to increase. Reducing operating cost is a common objective of fleet owners. Tires impact cost in two primary ways, rolling resistance and replacement cost. The total cost due to rolling resistance, replacement cost, and other secondary contributions is referred to as ‘tire total cost of ownership’. Both costs due to rolling resistance and replacement are a function of the driving route and the tread depth. In this paper, tire total cost of ownership for a broad distribution of routes is compared in a relative sense to the other route-dependent energy consumption costs resulting from vehicle inertia and vehicle aerodynamic drag. The algorithm developed includes the route history of velocity and forces on the tires and their effect on tire rolling resistance, tire wear rate, energy required to accelerate the vehicle inertia, and the energy lost to aerodynamic drag.

Tire noise is caused due to the complex interactions between the rotating tire and the road surface at the tire/road interface. It is usually caused due to a combination of individual noise generation mechanisms, which can either be structural or air-borne. The influence of each of these noise generation mechanism may vary, depending on various conditions such as tire design, road surface and operating conditions. Due to the many variables that affect the noise generation mechanisms in tires, it is usually a very complex task to isolate and categorize those that are present in the overall tire/road noise spectrum. Various approaches are used to categorize noise generation mechanisms in tires. In this paper, a statistical model based on the assumption that the tire noise acoustic pressure at a specific frequency band is related to the vehicle speed, is used, in order to study tire noise at different speeds.