Finnally decided to detail my car (my self) since the temps were around 50. Anyway i noticed white lines on the inside of the wheels. First i thought it was salt but i kepts scrubing and scrubing and using some wheel cleaner and it will not come off. I put my hand over the surface and it feels smooth but, I cannot get these white lines out of the inside of the wheels. It is only appearing on the front rims. Anyone have any ideas?