I BEGAN NOTICING SLIGHT FORMS OF WOBBLE WHEN GOING OVER BUMPS/POTHOLES AT 24K MILES OF MY 2017 4WD SWB CC F250 PLATINUM. THIS PAST WEEKEND I GOT THE EXTREME VERSION OF DEATH WOBBLE (EXTREME STEERING WHEEL OSCILLATION) WHERE I THOUGHT I HAD BLOWN A COUPLE TIRES AT ABOUT 50 MPH AFTER HITTING A POTHOLE ON THE ROAD. I HAVE NEVER HAD A SUPER DUTY DO THIS IN MY PAST MODELS GOING BACK TO THE MID 90'S. HONESTLY, IT HURT MY BACK AND SHOULDER TRYING TO CONTROL IT AND REQUIRED A DEATH GRIP ON THE STEERING WHEEL TO KEEP FROM CHANGING LANES. ONLY THING THAT CAUSED IT TO SUBSIDE WAS SLOWING DOWN TO ABOUT 10-15 MPH AND THEN IT SMOOTHED OUT LIKE NORMAL. THIS HAPPENED ON A FREEWAY AND THANK GOODNESS NO VEHICLES WERE BESIDE ME. I WILL NOT LET MY WIFE OR FAMILY MEMBERS DRIVE THIS TRUCK GIVEN THIS ISSUE. THIS IS A SAFETY ISSUE WITH THIS VEHICLE. I AM SCHEDULING TO TAKE TO DEALER AND LEAVE UNTIL IT IS GUARANTEED FIXED.