My ford f350 looks immaculate except for the wheels. The stock gray wheels that came on it are getting surface rust and some grime that wont come off. I really want to repaint them but dont know what to use. I was thinking some kind of grey primer similar to what is already on there. Anyone else do this before? Can anyone suggest a certain quality paint/primer? I know this may be a stupid question but I want it done right the first time and dont want to worry about it anymore.