CONSUMER HAS A 1997, FORD, E350 VAN. THE ORIGINAL TIRES WITH 27,700 MILES. TIRE SIZE LT225/75R16 DOT# UNKNOWN. REAR PASSENGER FIRESTONE STEELTEX TIRE TREAD SEPARATED GOING 65MPH. VEHICLE TURNED 180 DEGREES & HIT THE GUARDRAIL FRONT & REAR, AND WAS TOTALLED. FIRESTONE WILL BE CONTACTED.*AK *SLC