WE BEGAN LEASING OUR NEW TOYOTA TUNDRA 12/07. WE NOTICED THUMPING IN THE DRIVE TRAIN AND COMPLAINED OF THE THUMPING TO TOYOTA DEALER 4 TIMES PRIOR TO 12/08 AND THEY CONTINUED TO SAY NOTHING WAS WRONG. THERE WAS AN ACCIDENT 12/08. WAS DRIVING ON ROAD THE VEHICLE LOST CONTROL AFTER LOCKING UP. DEALER HAD VEHICLE FOR ALMOST 2 MONTHS REPAIRING ACCIDENT DAMAGE. UPON RETURN THUMPING CONTINUED AND REAR TIRES WORE OUT IN A FEW MONTHS AFTER PURCHASE OF NEW TIRES (ORIGINALS NEEDED REPLACED PREVIOUSLY). RETURNED VEHICLE TO TOYOTA, THEY CHANGED REAR END HOUSING 4/09. INSURANCE PAID AS CONTINUED DAMAGE FROM 12/08 ACCIDENT. THE THUMPING IS STILL CONTINUING AND APPEARS THERE IS SOMETHING STILL WRONG WITH THE VEHICLE. WE DID COMPLAIN TO INSURANCE COMPANY THAT WE FELT THE ACCIDENT WAS DUE TO AN AUTO DEFECT IMMEDIATELY FOLLOWING THE ACCIDENT. THEY WERE TO DO AN INVESTIGATION. NOW I AM BEING TOLD IT WAS CLOSED BUT WERE NEVER INFORMED OF RESULTS OF THE INVESTIGATION BY ALLSTATE. WE ARE UNSURE WHAT STEPS TO TAKE AT THIS POINT BUT ARE DISSATISFIED WITH THE PERFORMANCE OF OUR VEHICLE STILL AT THIS POINT AND FEEL DEALER AND INSURANCE COMPANY HAVE BEEN OF NO HELP. *TR