Best way to fix them, I've done lots of wheels. Is get a lil kit from bunnings its a piece you slide into your drill you get like a piece of sand paper thats a circle slide it over and do it up so it expends and hold it tight. I use a hammer drill and just go around it gently with the roughest paper circle it comes with to get the bulk then go around with the lightest circle that it comes with. you just slide them on the same drill piece each time
Costs about $30 and comes with Wire wheels for a drill too!
Then i use wet sand paper to go over where you take the scratches of and just sand them down smooth. or good as. I used auto All primer on the face, then Ended up using Silver wheel paint mine came up good. I wouldn't recommend using clear coat though
Only down fall with getting them painted with clear from a panel beater, is it flakes off
and most of the time you get run marks. at least if you do a coat and don't like it because of run marks just have a thin Wet sand paper to go over it before the next coat. Mine aren't perfect but a shiat load Better than what they were.
how mine looked
this is after taking the main scratches out, and about to wet sand it and make all of it smooth.
this is how they can turn out
Not perfect but its alot better