NEW YORK (Oct. 1)—Three California attorneys leading a class action against Bridgestone/Firestone and Bridgestone Corp. for Steeltex tires have taken their discovery international. Joseph and Gail Lisoni and Steven M. Weinberger sent letters to all member countries of the United Nations, asking them for any evidence of Steeltex tire failures within their borders. "Many vehicles manufactured in the United States come equipped with these defective tires and they may have found their way into your country," they wrote. Bridgestone/Firestone, which has consistently pointed to a federal investigation of Steeltex tires that ended without finding any defect, said it doubted the letter would create much concern within the United Nations. Lisoni has said he plans to hold a news conference in Washington Nov. 14 to present evidence of alleged defects in Steeltex tires to the National Highway Traffic Safety Administration.