WAS DRIVING APPROXIMATELY 60MPH, AND PULLING A GOOSE NECK TRAILER WHEN TIRE ON THE LEFT FRONT BLEWOUT. VEHICLE HIT CONCRETE BARRIER AFTER IT WAS PULLED A HARD LEFT. CONTACTED INSURANCE COMPANY. TOOK PICTURES. FOUND THE LEFT FRONT TIRE HAD COMPLETELY LOST THE TREAD. FIRESTONE WILDERNESS AT III ON A 1999 FORD F350. LT255/85R16. *AK