PE02000; TIRE TREAD SEPARATION: WHILE DRIVING AT 70 MPH, TREAD ON THE REAR PASSENGER'S SIDE TIRE CAME OFF. DRIVER LOST CONTROL OF VEHICLE. EXPLORER FLIPPED OVER THREE TIMES. TWO OTHER PASSENGER'S WERE IN THE EXPLORER. DRIVER WAS TAKEN TO THE HOSPITAL. THE OTHER TWO PASSENGERS WERE TREATED AT THE SCENE. TIRE WAS A FIRESTONE ATX, ORIGINAL EQUIPMENT. THE EXPLORER WAS TOTALLED. *AK