A professional who examines defective tires and tubes returned by customers to determine allowance due on replacement. Respnsibilities include:

• Visually and tactually examines tire to determine if defect resulted from faulty construction or curing.
• Measures tread depth, using tread depth gauge, to determine remaining tire life.
• Prorates allowances based on tread wear, warranty provisions, and knowledge of tire characteristics.
• Explains basis for allowance to customer, sales representative, or distributor.
• May train new workers.