NHTSA Complaint #10281763 — 2006 FORD F-350 SD

I OWN A 2006 FORD F-350 4X4 SHORT BED CREW CAB PICKUP TRUCK. I AM THE ORIGINAL OWNER AND NO MODIFICATIONS HAVE EVER BEEN MADE. I HAVE KEPT THE VEHICLE IN GOOD MECHANICAL SHAPE, KEPT THE TIRES INFLATED TO RECOMMENDED LEVELS, AND KEPT THE TIRES BALANCED AND ROTATED. THE VEHICLE HAS ALWAYS EXPERIENCED A SEVERE STEERING OSCILLATION WHENEVER THE VEHICLE IS TRAVELING OVER 50 MPH AND HITS A SMALL BUMP ON THE HIGHWAY. THE OSCILLATION IS MOST SEVERE IF THE BUMP IS HIT WHILE IN A LEFT TURN. WHEN THIS OCCURS, I BREAK UNTIL SPEED IS REDUCED TO ABOUT 30 MPH TO 40 MPH AND THE OSCILLATION STOPS. WHEN THIS OSCILLATION OCCURS, THE VEHICLE HAS LIMITED STEERING CONTROL. IT GENERALLY TRAVELS IN A STRAIGHT DIRECTION BUT DOES NOT RESPOND WELL TO STEERING WHEEL INPUT UNTIL THE OSCILLATION IS DAMPENED. THE VEHICLE IS DIFFICULT AND IN SOME CASES IMPOSSIBLE TO CONTROL. THIS OSCILLATION HAS OCCURRED NUMEROUS TIMES. IN THE CASE TODAY, THIS OSCILLATION WAS SO SEVERE THAT IT HAS CAUSED THE VEHICLE TO SWERVE INTO THE OPPOSING TRAFFIC LANE. I NEARLY HAD A HEAD ON COLLISION, THE OPPOSING VEHICLE MOVED OVER TO THE SHOULDER TO ALLOW ME TO PASS. THESE OSCILLATIONS HAVE OCCURRED WITH BOTH THE ORIGINAL CONTINENTAL LT275/70R18 TIRES AND ALSO THE REPLACEMENT MICHELIN LT275/70R18 TIRES. TIRES PRESSURES HAVE BEEN MAINTAINED AT 65 PSI FRONT AND 75 PSI REAR AS RECOMMENDED BY THE OWNER'S MANUAL. *TR