WASHINGTON (Aug. 9)—Bridgestone/Firestone Inc. voluntarily will recall 6.5 million Firestone ATX, ATX II and Wilderness AT tires—size P235/75R15 only—that are being investigated by the National Highway Traffic Safety Administration for tread separation. The tires will be replaced free of charge to consumers, Ford Motor Co. and Bridgestone/Firestone said in a joint press conference this morning in Washington. The recall will be done in three phases, the first in Arizona, California, Florida and Texas, where 80 percent of the accidents under investigation took place. The companies said all the Wilderness tires involved—a total of 2.7 million—were produced at Bridgestone/Firestone´s Decatur, Ill., plant. The tire company said it has found no design or manufacturing reason for the failures, and outside factors such as low inflation caused the problems. Most of the tires were original equipment on Ford Explorers and Mercury Mountaineers.