WHILE BRAKING AT SPEEDS ABOVE 50 MPH THE VEHICLE VIBRATED SEVERELY. *NM THE CONSUMER STATED WHEN SHE ATTEMPTED TO BRAKE FOR A TRAFFIC LIGHT, THE BRAKE PEDAL WENT STRAIGHT TO THE FLOOR AND CONSEQUENTLY THE CONSUMER REAR ENDED A 18-WHEELER WHICH WAS AT A STOP. THE CONSUMER ALSO STATED THE AIR BAGS DID NOT DEPLOY. *JB