Established in 1962, Big O Tires LLC is one of North America's largest retail tire franchisors. It offers a range of services, such as tire service and repair, alignment, routine services, fluids and batteries. Located in Phoenix, Ariz., the firm has 480 locations in 20 states. The company is a part of the TBC Retail Group, an automotive retail network including around 1,200 Big O Tires, Tire Kingdom, Merchant's and NTB locations in the United States. Big O Tires LLC has association with Continental, Nitto and Nankang.