I guess I'm nuts, but why paint them in the first place? Unless you take a wheel off at shows or something, nobody will ever see them anyway and you won't live long enough for them to rust or oxidize badly enough to damage them. The only way anyone could see much of them is if you had some really funky spoked wheels. Even wire wheels are hard to see through.
I was pretty particular in building my car, but other than having the chassis powder coated, I left the mechanicals alone. Besides, it's just something else to clean. Just an opinion
