NHTSA Complaint #10438804 — 2006 FORD F-350 SD

EXPERIENCED SEVERE VIBRATIONS AND SHIMMING AFTER HITTING A BUMP IN THE ROAD. HAD TO BRING THE TRUCK TO A COMPLETE STOP BEFORE I COULD GO ON. I THOUGH I MUST OF HAD A FLAT TIRE, BUT NO. TOOK THE TRUCK TO THE DEALER, THEY SAID THEY TIGHTENED SOME THINGS AND ADJUSTED THE TIRE PRESSURE. A COUPLE OF MONTHS LATER IT HAPPENED AGAIN. I WENT STRAIGHT TO THE LOCAL GARAGE TO HAVE THE TIRES CHECKED, BUT THE TIRE PRESSURE WAS FINE. IT CONTINUES TO HAPPEN ABOUT TWICE A YEAR WITH NO REASON, JUST DEPENDS HOW I HIT A BUMP ON THE ROAD. IT USUALLY HAPPENS WHEN CROSSING A BRIDGE ON THE INTERSTATE. THIS LAST TIME IN OCTOBER 2011, I WAS CROSSING A BRIDGE ON INTERSTATE PA 80 IN THE PASSING LANE, WHEN IT HAPPENED. I WAS ALL OVER THE ROAD BEFORE I COULD STOP. I WAS FORTUNATE THAT THERE WERE NO OTHER VEHICLES AROUND, OR IT WOULD HAVE BEEN A DISASTER. I WAS READY TO TAKE THE TRUCK BACK TO THE DEALER, AND TELL THEM, ITS TO DANGEROUS TO DRIVE ON THE INTERSTATE. I GOT THIS LETTER FROM FORD DISCUSSING THIS ISSUE. THEY ARE CORRECT STATING "A SEVERE" VIBRATION, BUT TOTALLY WRONG SAYING THIS CONDITION RESULTS FROM SIGNIFICANT TIRE UNDER-INFLATION. I'VE NEVER DRIVEN MY TRUCK WITH SIGNIFICANT TIRE UNDER-INFLATION. THIS SHIMMING CANNOT BE TAKEN LIGHTLY, BUT THAT WAS THE IMPRESSION I GOT FROM THE DEALER. I WONDER HOW LONG FORD REALLY NEW ABOUT THIS ISSUE. I SHOULD BE ON RECORD BACK AT MY DEALER SOON AFTER I GOT THE TRUCK WITH THIS EXACT ISSUE. *TR