I am planning on repainting my GTA rims black again tomorrow. They are faded. Do I need to sand them first? I heard that it will stick better to the old paint...should I just buy the spray can stuff and just spray it...or should I sand, prime, then paint? What paint should I use? I am in need of help ASAP since I am doing this tomorrow. Thanks. Any tips? Also...I am going to repaint the black metal strips on my t-tops and the black metal around my hatch....what paint should I use for them? I need to sand them first since the t-top metal is worn down to the gray and the hatch metal is rusted a little. Please give me as much help as you can give me, I appreciate it.

James