American Tire Distributors, also known as ATD, serves repair and automotive performance shops. Operational since 1935, the company maintains an inventory of tires for tractor-trailers, buses, farm machineries, and passenger, sport utility and recreational vehicles. It also offers a line of wheels from various manufacturers, such as Luxury Symbolic Wheels and BMF Wheels. American Tire Distributors operates Gray's Wholesale Tire Distributors. It manages more than 80 distribution centers throughout the United States. The company has a staff of over 2,200 individuals. American Tire Distributors offers appointment scheduling services. It provides a range of equipment that includes tire changers and wheel balancers under the DSP9200 and TCX500 series.