DELTA SIERRA RADIAL P235/75R15, DOT UNKNOWN, REPLACEMENT EQUIPMENT WITH 18000 MILES ON A 1993, CHEVROLET, G20 VAN. WHILE DRIVING 65 MPH LEFT REAR TIRE HAD TREAD SEPARATION. TREAD WRAPPED AROUND AXLE, CAUSING LOSS OF BRAKES. CONSUMER AND HIS WIFE SUFFERED NECK AND BACK INJURIES. DAMAGE TO VEHICLE WAS $ 5000.00. *AK TIRE WAS DEFECTIVE. THE HYDRAULIC BRAKE FAILED AND THE EMERGENCY BRAKE WAS TORN OFF. *YH