TRAVELING 70MPH & HEARD A THUMP SOUND & VEHICLE STARTED SWERVING. STOPPED VEHICLE & CHECKED TIRES. NOTICED TREAD CAME OFF TIRE. IT HAD WHIPPED THE MOLDING OFF SIDE OF VEHICLE, CAUSING VEHICLE TO GO INTO A DITCH. HAD TIRE REPLACED & DID NOT HAVE TIRE. IT WAS THE ORIGINAL TIRE. FIRESTONE WILDERNESS ATX, SIZE P235/75R15 WITH 10,000 MILES. *AK