I HAD MY 2005 TUNDRA BED LOADED TO THE MAXIMUM ADVERTISED WEIGHT CAPACITY. ONCE I ENTERED THE HWY AND REACHED A SPEED OF 45 THE VEHICLE WENT OUT OF CONTROL. I HAVE BEEN DRIVING FOR MANY YEARS AND HAVE NEVER EXPERIENCED A LOSS OF CONTROL LIKE THIS. THE VEHICLE LEFT THE ROAD AND FLIPPED UPSIDE DOWN. THE CAB HELD UP GREAT AND EVERYONE WAS WEARING THEIR SEATBELT THEREFOR THERE WERE NOT SIGNIFIGANT INJURIES. ATLEAST ONE OF THE TIRES WERE OFF THE RIM BUT I'M NOT SURE IF THIS WAS A RESULT OF THE ACCIDENT OR A CAUSE.