Bridgestone Corp. says it will stop supplying tires for Formula One racing in 2011.
Japan's top tiremaker said Monday it wants to focus its resources on core tire businesses. Company spokesman Makoto Shiomi declined to say the decision was due to a prolonged global slump.
Bridgestone began supplying tires for F1 in 1997. Since 2007, the company has been a sole supplier of tires for the series. Bridgestone said it will not renew its contract that expires in late 2010.