An insufficient amount of film build of the clear by the manufacturer. In layman s terms, they failed to apply enough clearcoat to the top surfaces of the vehicle. Normal film build requirements are 1.5 to 2 mil of clear on the top surfaces. The application bells, which apply the clearcoat material, were improperly adjusted and failed to apply the material evenly to the surface in certain areas. The improper use of a rotary buffer when polishing the vehicle.
Unrepaired surface scratches in the clear.
Lack of adequate Ultra Violet Ray blockers in the clearcoat. To experience what just is the thickness of the clearcoat on your vehicle, obtain the cellophane outer wrapper from a pack of cigarettes. Hold the wrapper together so that both sides touch each other. The thickness you are feeling is 1.5 mil. That is the same thickness as a factory-applied clearcoat.