TRAVELING 55MPH IN THE MIDDLE LANE, NORTH, LEFT REAR TIRE BLEW. LOST CONTROL OF VEHICLE AND HIT A GUARDRAIL. MANAGED TO STOP. THEN CHECKED TIRES. NOTICED TIRE WAS SHREDDED AFTER BLOWOUT. DID NOT HAVE THE TIRE. HAD ALL THE TIRES CHANGED. MICHELIN,185/65R15 WITH 13,000 MILES ON A 1998, BMW 318I.*AK