NASHVILLE, Tenn. (Nov. 18)—Bridgestone/Firestone North American Tire L.L.C. said today it is raising its prices by 4 to 5 percent on Bridgestone, Firestone, Dayton, associate and private brand passenger and light truck tires. The company also said it is increasing prices 3 to 4 percent on its Bridgestone, Firestone and Dayton medium and heavy-duty truck tires. Bridgestone/Firestone cited escalating raw material costs for the price hikes. The price adjustments vary by product line and will be effective for all orders placed on or after Jan. 1, the firm said.