plasti dip
- not sure if it adheres on the chemical-corrosion process, on alloy rims / without coming back...typically spray bomb paint, lacks any degree of hardness.
Once that aluminum is damage has started (corrosion) it's difficult to stop; I've seen lots of wheels with spider-web corrosion, all underneath the clear.
The only way I know to get them looking really good again is to strip the clear coat completely and re-do.
Chemical stripping plus abrasive sanding, is needed / or cabinet blast rims, using glass bead media...sandblasting is usually to coarse.
Many primers will not stick to aluminum alloy, but Epoxy with harder added will.
- and seal oxygen out of former wheel corrosion pits, stopping it in its tracks from spreading