2010 Bmw X5 Wipers & Visibility Problems

I WAS TRAVELING ON FREEWAY TO THE AIRPORT WHEN MY WIFE AND I HEARD A LOUD BOOM AND SUDDENLY HEARD LOUD AIRFLOW. I PULLED OFF TO SIDE OF ROAD AND INSPECTED CAR. THE SUNROOF HAD EXPLODED AND SHATTERED. THE CAR TRAVELING BEHIND ME ALSO STOPPED TO INSPECT HIS VEHICLE BECAUSE OF FLYING GLASS. THE CABIN DOOR TO THE SUNROOF HAD LUCKILY HAD BEEN CLOSED SO AS MY WIFE AND I AVOIDED THE FLYING GLASS. WHEN WE RETURNED FROM OUR TRIP I TOOK VEHICLE TO DEALER, THE VEHICLE WAS UNDER WARRANTY. THE DEALER SAID THIS PART WAS NOT COVERED AND WOULD COST $3600 TO REPAIR. WE GOGGLED BMW5 SERIES EXPLODING SUNROOFS AND DISCOVERED WE WERE NOT THE ONLY ONES TO EXPERIENCE EXPLODING SUNROOFS. SURELY BMW KNOWS ABOUT THIS POTENTIALLY GRIEVOUS PROBLEM. WE CALLED BMW NORTH AMERICA AND FILED A COMPLAINT WITH THE RESOLUTION DEPARTMENT. THE NEXT DAY BMW TO MY CHAGRIN WAS WILLING TO PAY 50 PERCENT OF THE REPAIR COST. I EXPECTED FULL COVERAGE. I NEEDED THE CAR BACK AND EXCEPTED OFFER VOWING NEVER TO BUY A BMW AGAIN. I EXPECTED TO BECOME WHOLE AND NOT EXPECTING BMW IGNORING THE PROBLEM THUS ENDANGERING THEIR DRIVERS FOR ECONOMIC REASONS. ONCE AGAIN GOGGLE BMW 5 SERIES EXPLODING SUNROOFS. I TOOK VEHICLE TO LEXUS DEALER AND TRADED IT. I WANTED NOTHING TO DO WITH THAT CAR. UNFORTUNATELY I OWN ANOTHER BMW5. WHAT I WANT FROM NHTSA IS TO INSPECT THE PROBLEM AND I STILL WANT TO BE COMPENSATED FOR THE ENTIRE COST OF THE PROBLEM NOT JUST 50 PERCENT. *TR