NHTSA Complaint #733259 — 1999 GMC SIERRA

LT 245/75R16 VIBRATE/SHAKE THE ENTIRE VEHICLE AT 40-45 MPH. YOU CAN FEEL IT THRU YOUR BACK. WORSE WHEN COLD IN THE AM. BALANCING BY THE GMC AND FIRESTONE DEALERS HAVE NOT HELPED. FIRESTONE HAVE OFFERED A GENEROUS PRORATED TRADE TOWARD DUELLER HT 6 PLY PASSENGER TIRE. 50% OF TIRE HAS WORN BY TREAD DEPTH AT 18000 MILES. SHOULD BE A 50000 MILE TIRE. RIDE HAS GOTTEN SIGNIFICANTLY WORSE IN THE LAST FEW THOUSAND MILES. STILL OCCURS IN NEUTRAL AND APPEARS TO COME FROM THE REAR. NO VIBRATION THRU THE STEERING COLUMN. AT HIGHER SPEEDS AROUND 60-65, SOMETIMES IS NOTICEABLE. FEELS VERY UNSAFE, ESPECIALLY TOWING CAMPER AND AT HIGHWAY SPEEDS. TIRES WERE MADE IN CANADA.*AK (TIRESIZE: LT245/75R)( DOT NUMBER: TIRE SIZE: LT245/75R )