NHTSA Complaint #733007 — 1996 CHEVROLET SUBURBAN

THESE TIRE ACT AS IF THEY ARE OUT OF BALANCE, A SPEEDS OF 65-70MPH THEY WILL SHAKE TO VEHICLE SO BAD,IT DISLOGDES MY CELL PHONE BATTERY. I HAVE HAD THESE TIRE BACK TO FIRESTONE TO BE REBALANCED SEVERAL TIMES. THEY SAY THE TIRE ARE BALANCED CORRECTLY. THIS PROBLEM OCCURS AFTER THE VEHICLE HAS BEEN DRIVIN FOR A HALF HOUR OR SO. WHEN THEY ARE COLD THEIR FINE. FIRESTONE HAS BLAMED MY DRIVESHAFT AND CV JOINTS. I HAVE MOVED THE TIRE AROUND THE VEHICLE AND THE VIBRATION FOLLOWS THE TIRES. COULD THESE TIRE BE GOING OUT OF ROUND AFTER THEY WARM UP? I WAS JUST LIVING WITH THIS PROBLEM, BUT NOW I SEE THAT THESE TIRE ARE UNDER INVESTIGATION BY THE NHTSA. (DOT NUMBER: NONE TIRESIZE: LT24575R16)