BF GOODRICH,ALL TERRAIN TA, DOT BE608L1458, REPLACEMENT EQUIPMENT WITH UNKNOWN MILEAGE ON A 1993, CHEVROLET, SILVERADO. WHILE DRIVING 70-75 MPH, REAR DRIVER SIDE TIRE EXPERIENCED TREAD SEPARATION. CONSUMER LOST CONTROL OF VEHICLE, VEERED OFF ROAD, ROLLED A COUPLE OF TIMES, AND THEN HIT A TREE. CONSUMER SUFFERED A SEPARATED LEFT SHOULDER/4 BROKEN RIBS/PUNCTURED LUNG, AND CUTS ON FACE. VEHICLE WAS TOTALLED. *AK TIRE MILEAGE APPOX. 40,000 MILES, TIRE SIZE 311050R15. *TT