PE00020, TIRE TREAD SEPARATION: WHILE DRIVING ABOUT 60 MPH, TREAD ON THE DRIVER'S REAR SIDE TIRE CAME OFF, CAUSING VEHICLE TO ROLL OVER. DRIVER WAS ALONE AND WAS NOT INJURED. TIRE SIZE P25570R16. VEHICLE WAS TOTALLED. FIRESTONE WAS NOTIFIED THROUGH E-MAIL ABOUT THE TIRE. THERE WAS NO REPONSE FROM FIRESTONE. PLEASE PROVIDE ANY FURTHER INFORMATION.*AK