I looked at my rear bumper,quarter panel and trunk and i noticed that the rust from the rear disks chips off and sticks to the paint.If you look closely you will notice little rust spots melted into your paint.Sucks!

 

they arent melted in. they will scrub off

 

Probably not break dust but industrial fallout/rail dust. Clay-baring should take it right out..

 

Wash with dawn, clay bar, wash again, then put a good wax or polymer on it.

Clay bar will take those spots right out. If it doesn't use a fine cut polish and that will take them out.

Just make sure you wax after you clay bar or polish because there won't be any protection left.