I spent several hours cleaning and polishing the wheels I got for $7 each from PickNPull. They were dull, oxidized, rusty, and had lots of ancient brake dust on them. Black Magic Wheel Cleaner got the brake dust off, but not without hours of very much scrubbing. I polished them with Meguiar's Deep Crystal Polish, followed by Meguiar's Gold Class Wax, then coated with DuPont Teflon Wax. In the end they were very shiny, with only a little rust remaining.
I made sure that the insides were just as clean as the outsides.
I had Les Schwab Tires mount and balance the tires. It was $118.32 with 5 new valve stems. As I was installing the wheels I noticed that they wrote "BENT" on the inside of one of them. I'm not sure what that's about, so I'll have to call them. For now I'm using at as a spare. If the rim is bent, I think that I have another one I can polish and use.
I found some rusty wheel bolts and soaked them in Evapo Rust for a couple of hours. I then coated them with wax before adding a small amount of anti-seize paste to the threads.
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DON'T MESS WITH MY MERCEDES!
1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles