National Tire and Battery, commonly referred to as NTB, is an American-based chain of auto service centers. Before 2003 TBC was owned by Sears and in 1997 they created NTB by merging together two other tire suppliers, Tire America and National Tire Warehouse. They added the "B" to indicate their ability to sell batteries as well. Sears sold this company to TBC Corporation, owners of Big O Tires, Tire Kingdom and Merchant Tire chains. A chain of 226 NTB stores in the United States brought $425 million in revenue and $60 million in profit alone in 2002, and today NTB has more than 1,200 locations in 41 states along with Washington DC.