I WAS ON AN INTERSTATE GOING INTO A GRADUAL TURN AND WENT OVER AN EXPANSION JOINT WHICH RESULTED IN UNCONTROLLABLE SHAKING OF THE FRONT WHEELS AND STEERING WHEEL. THIS FORCED ME OFF OF THE ROAD STRIKING A CURB AND BLOWING OUT MY RIGHT FRONT TIRE. MY TRUCK HAD DONE MINOR SHAKING FOR SEVERAL MONTHS WHEN GOING OVER EXPANSION JOINTS. I HAVE HAD 2 OTHER VIOLENT SHAKING EVENTS WHEN IN EXCESS OF 55 MPH. I WILL NO LONGER DRIVE ABOVE 50 MPH IN THIS VEHICLE AS IT IS UNSAFE. MINOR ROAD IRREGULARITIES ARE RESULTING IN INCREASED BUT CONTROLLABLE SHAKING AT THIS POINT. IT IS WORSE WHEN TURNING OR ON A CURVE. IT STILL SHAKES EVEN ON A STRAIGHT ROADWAY AT LOWER SPEEDS JUST NOT AS VIOLENTLY. THE VEHICLE HAS LESS THAN 30,000 MILES AND TIRE ROTATION HAS BEEN CONDUCTED AS SET OUT IN THE OWNERS MANUAL.