Abstract: An eraser having the capability of absorbing oil or wax as a formulation of more than 50% styrene butadiene rubber (SBR). The eraser is particularly well suited for use in testing tires having oil or wax therein.

Abstract: A method and apparatus for testing rubber tires includes an abrader for rubbing against the surface of the tire and an eraser for removing particles of rubber left on the abrading surface by the tire. The eraser has the capability of absorbing oil or wax included in the tire being tested and in the particles deposited on the abrading surface.

Abstract: A method of abrading a tire tread compound to measure its irregular wear characteristics, includes the steps of abrading each of a plurality of sample wheels in rotating engagement with a respective abrasive member. An outer layer of each sample wheel is made of a tire tread compound to be abraded. The velocity of the sample wheels relative to the velocity of the abrasive members defines a first slip value. Each sample wheel is abraded in rotating engagement with a plurality of abrasive members at the first slip value. The loss of the tire tread compound of each sample wheel at the first slip value is then measured. Each sample wheel is then abraded in rotating engagement with a plurality of respective abrasive members at a second slip value. The loss of the tire tread compound of each sample member at the second slip value is then measured. Each sample wheel is then abraded in rotating engagement with a plurality of respective abrasive members at a third slip value.