Alvin, I don't know for sure, but it seems like I've heard that the solid wheels are clear coated. You may want to check on that before you hit it with the buffing wheel.
If they aren't, just about any aluminum polish and a rag will do just fine. I prefer the Mother's stuff myself. It's fairly fast and not a lot of work.
If you have a little corrosion (aluminum = white rust), put a dab of the polish on a piece of very fine wet/dry sandpaper. After you've removed the rust, go back over the spot with the polish and rag. Works good.