SEVERE INNER SURFACE TIRE WEAR ON REAR WHEELS OF 2007-2008 CHEVROLET IMPALA VEHICLES. TECHNICAL SERVICE BULLETIN 08032 IS ON FILE WITH GENERAL MOTORS, ACKNOWLEDGING THE PROBLEM, BUT WILLING ONLY TO PAY FOR NECESSARY REPAIRS TO POLICE VEHICLES, WHEN IN FACT THE FLAW EXISTS WITH ALL 2007-2008 IMPALA VEHICLES. WE PURCHASED THE CAR AS A DEMO MODEL IN 2009 AND WERE NOT MADE AWARE OF THE PROBLEM. WE BELIEVE THE DEALER WAS HONEST, AND ALSO NOT AWARE OF THE PROBLEM AT THE TIME. WE BELIEVE THIS TO BE A SAFETY ISSUE AS WELL, SINCE HANDLING ON WET ROADS IS EFFECTED DUE TO THE FACT THE REAR TIRES ARE CONTACTING THE ROAD SURFACE ONLY ON 1-2" OF THE INSIDE SURFACE OF THE TIRES. *TR