I WAS TRAVELLING AT 65MPH ON THE FREEWAY WHEN THE TREAD OF THE LEFT REAR TIRE SEPARATED FROM THE TIRE. I LOST CONTROL OF THE CAR. THE CAR SWERVED ACROSS THREE LANES AND ROLLED OVER 1 AND 1/4 TIMES, LANDING ON THE DRIVER'S SIDE. THE TIRES HAD BEEN INSPECTED AND ROTATED 4 MONTHS (1500 MILES) BEFORE THE ACCIDENT. AT THAT TIME WE WERE ADVISED BY FIRESTONE THAT THE TIRES HAD 10,000-20,000 MILES OF USAGE LEFT. *AK( DOT NUMBER: W2HL1MO482 TIRE SIZE: P235/75R15 )