PE00020;TIRE TREAD SEPARATION: WHILE DRIVING 70 MPH TREAD ON THE REAR PASSENGER'S SIDE TIRE CAME OFF. DRIVER COULD NOT CONTROL EXPLORER, WHICH ROLLED OVER. THREE OTHER PASSENGER'S WERE IN THE EXPLORER. ALL FOUR PASSENGERS WERE TAKEN TO THE HOSPITAL. TWO PASSENGER WERE TREATED FOR INJURIES. THE TIRE WAS A FIRESTONE, WILDERNESS, AT. TIRE SIZE P23575R15. TIRES WERE NOT PURCHASED ON THE EXPLORER. TIRE MILEAGE 22,000. THE EXPLORER WAS TOTALLED.. *AK THE DOT # IS VDHL1PY316. *SLC