PE00020, PURCHASED VEHICLE USED, TIRE SIZE P23575R15. WHILE DRIVING AT HIGHWAY SPEEDS, PASSENGER'S REAR TIRE TREAD SEPARATED, CAUSING A LOSS OF VEHICLE CONTROL. VEHICLE WENT SIDEWAYS/ SKIDDED AND FLIPPED OVER 6 TIMES IN WHICH THE DRIVER WAS EJECTED FROM VEHICLE AND DIED, AND PASSENGER DIED 20 MINUTES LATER. TIRE HAS 2 STEEL BELTS ON. STEEL BELT STAYED ON THE CORD OF TIRE, AND THE 2ND STEEL BELT FLEW OFF WITH THE TREAD. SEND TO A TIRE EXPERT WHICH STATED IT WAS THE DESIGN OF THE TIRE. PLEASE PROVIDE FURTHER INFORMATION.*AK