Sand, primer, paint, clear and it should be good. ... That's that, just remember you're basically layering up a shell for the wheels, so cheap paint isn't a great idea. Getting some heat and chip resistant paint might be worth it, you'd be surprised at how hot brake disks can get on some drives .
Primer prepares the surface for the best paint adhesion. You will want to apply 2 to 3 coats of self-etching primer. Self-etching primer provides a smooth finish for the paint and also prevents rust. Apply primer in a light coat and allow each coat to dry thoroughly before you apply the next coat.
Painted rims don't hold up any where near as well as powdercoat. Having said that, if you're looking to save money, take em, sand em, mask em and spray em with a spray bomb. They'll look great but won't hold up as well but who cares, you can easily (and cheaply) spray em again in a year or so.
Cost to customize rims
The cost of customizing your car's wheels can vary drastically. Heffron says he typically charges $175 per wheel for powder coating and about $150 to $165 per wheel for full paint. The cost may rise a bit for specialty designs, like your favorite college or professional teams.
You'll need spray primer, spray paint, a wire brush, rubbing alcohol, tire shine gel, index cards, and soapy water. ... This protects the tire from overspray. Apply three coats of primer and paint, then voila! You've got a brand-new looking wheel and a ride you can be proud of .