DRIVING ON SH 239 IN REFUGIO COUNTY, TEXAS AT APPROX. 70 MPH BETWEEN TIVOLI, TX AND US HIGHWAY 77 SOUTH. RIGHT FRONT TIRE BLEW OUT WHICH IMMEDIATELY CAUSED THE TRUCK TO VEER OFF THE RIGHT SIDE OF THE HIGHWAY, OVER A METAL CULVERT, GO AIRBORNE THROUGH A BARBED WIRE FENCE AT THE CORNER POSTS, LAND IN A PASTURE AND CONTINUE THROUGH ANOTHER BARBED WIRE FENCE WITH METAL FENCE POSTS. DISTANCE TRAVELED FROM ROAD TO STOPPING POINT APPROXIMATELY 70-75 YARDS. TIRES PURCHASED AT DISCOUNT TIRE, 9/16/2009 TRUCK MILEAGE 68,000, ALL TIRES REPLACED AT THIS TIME WITH LT/265/75R16E1 123R B BF GOODRICH RUGGED TRAIL T/A RBL TIRES. *TR