Originally Posted by
27inch
For steel rims, I use hydroflouric acid wire wheel cleaner, along with a soapy piece of steel wool.
I assume you are aware of the risks, but in case others are not...
"A serious HF burn at low concentration covering less than 2 percent of your body can kill you. Skin contact, even with diluted HF solutions (< 2 percent) will burn."
--http://www.carwashmag.com/home/article/hydrofluoric-acid-renewed-warnings/908f347a55405ce828a06f52baa5046b.html