Abstract
Abstract An improved method for a paint test is presented. The test consists of applying a single layer of paint to the tread surface by spraying, measuring the intensity of reflecting light to check the evenness of the paint thickness, running the tire on a vehicle for a short distance, and assessing the wear rate by measuring the intensities of reflecting light at various locations, and comparing them with the fresh paint values. The wear rate is the change in gray level at each point on the tread block. Under well-controlled test conditions, the wear rate can be measured with a very high resolution. An example is provided to show the wear distribution from shoulder to shoulder of a truck tire. Using the presented technique, the effect of wheel alignment and tire type on uneven wear is studied.
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