Black wheel schmitt vs chrome wheels?

[Evenflow]

Recieved my black wheel schmitt today. Thing is absolutely awesome I can tell its going to be a breeze to clean dirty wheels now.



My usual wheel process consists of foam gun and NXT, foaming the wheels, then a sheepskin and cleaning the wheels. Should I be worried about marring chrome wheels with the black schmitt and the foamgun?

 

[David Fermani]

I wouldn't worry about the wheels, but stay away from the paint. Those black Schmitt's are coarse.