FORT WORTH, Texas (Oct. 8)—Bridgestone/Firestone Inc. has renewed its association with the Indy Racing League for the next four seasons, making Firestone the sole tire brand for the IRL Northern Light Series and Infiniti Indy Pro Series, a "driver development series" that debuts next year. Firestone has been the series' sole supplier since the 2000 season, after Goodyear suspended its tire program for open-wheel racing. "The continuing relationship with the Indy Racing League underscores our strong commitment to the Firestone brand, to maintaining its historical place in motorsports, and to building enhanced consumer confidence in our tires," said Shu Ishibashi, executive vice president of Bridgestone/Firestone and president of the company's U.S. Consumer Tire Group. Tony George, IRL president and CEO, said the IRL wanted a single tire supplier "for safety and cost-control benefits." The IRL also had discussed the contract with Goodyear, but chose to continue with Firestone.