I'm currently using soap and water and an ammonia free glass cleaner to get off water spots. They look good!Recently had my 14 in for an oil change. My service guy asks me what I am using on the rims because they look so good. I said Blackfire wheel and tire cleaner. He says that their SRT tech just got back from some sort of class for the SRTs and they recommend just soap and water on the rims. I haven't had any issues using the Blackfire, but that is SRTs recommendation for what it's worth.