MY WIFE WAS DRIVING TO THE STORE AND HIT A SMALL POTHOLE CAUSING THE ENTIRE TRUCK TO SHAKE AND VIBRATE SO BADLY SHE COULD NOT CONTROL THE TRUCK. SHE HAD TO BRAKE VERY QUICKLY AND TRIED TO GET OFF ROAD CAUSING HER TO HIT A TREE BRANCH AND DENTING TRUCK AND CRACKING WINDOW. I HAVE SINCE COME TO FIND THIS TO BE 'FORD DEATH WOBBLE'