You could be right, but pretty much every thread I have read about applying plastidip to wheels states that its pretty crucial to get rid of any traces of dirt/brake dust etc, if you want a good finish, that will last as long as possible. Which is what I want.
I still have a few weeks before going to the track, so I am going to just be patient and keep on cleaning them as well as I can, until I feel I can make no more difference, then I will dip them and hope for the best
I just dont want to waste $170 of product, by being impatient and rushing things as I know I will regret it.