The balance of power in testing, specifying, and purchasing tires is beginning a gradual shift. Automobile manufacturers are picking up the pace and shifting power using new technologies for testing tire and wheels. New techniques, new tests, and eventually new requirements are heading towards the tire industry. Much of this new testing is originating from Japan, especially in the area of High Speed Uniformity and Flat Belt testing. The amount of information concerning tire construction, testing data and relationships to warranty is increasing at an astonishing pace. This paper will discuss the general trends in testing that are occurring at automobile manufacturers, the reasons for testing, the preliminary findings, and what may lie ahead for tire companies.