IronX
IronX attacks the ferrous metals and dissolves them, really cool technology.
http://www.autogeek.net/carpro-iron-x-cleaner.html
Used it on my wheels (and paint) and my dad's neglected wheels. Awesome stuff
Here is a review I did for my wheels. Let me know if you guys can see this:
http://ohiobimmers.com/forum/showthread.php?t=7436