WHILE DRIVING NORTH ON FLA. TURNPIKE ON A CLEAR, WARM MORNING IN JUNE, 1998 AT 70 MPH, THE TREAD ON MY LEFT REAR TIRE SEPARATED FROM THE TIRE (TIRE STAYED INFLATED). I LOST STEERING CONTROL, CRASHING INTO A MEDIAN RETAINING WALL AT HIGH RATE OF SPEED, RESULTING IN PHYSICAL INJURY TO MYSELF AND TOTAL LOSS OF MY VEHICLE.( DOT NUMBER: TIRE SIZE: P235 75R15 )