Did you just start a thread to see how much you could stir up? I think KL2DC answered the issue perfectly. It simply is not a racist term, it is a cultural term - and not one aimed at a racial, geographic, national. or religious culture, but one exhibited by a style preference.
People of all races, creeds, and nations can be "ricers". That in itself makes it impossible for the term to be racist.
Over analyzing everything in desperate search of something to find offensive is 99% of what is currently wrong with America. Knock it off.
I think it is bad luck to be superstitious