Got it - then they're probably clear coated.
I just ordered a few products from Adam's that are supposedly dynamite; raves reviews from everyone I've spoken to.
For the rims - I'm using their Machine Sealant, Brilliant Glaze and Americana Wax this wkd on mine.
The downside is that it's fairly expensive, but the results seem pretty amazing.
I can't think of the name, but there's a company that came out with a wax that supposedly is awesome at repelling brake dust...something to do with it leaving a charged surface...sorry the details suck on this one, but i only saw the stuff once and never heard of it again.