If minor, start with sanding the area with progressively fine automotive sandpaper.
https://www.amazon.com/gp/product/B01MCXXP0J/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Then apply 3 coats of matching paint, 2 coats of clear.
For the 18" Aeros, matching paint...