Quote Originally Posted by speedminded View Post
lol warm water is only going to clean off water soluble grime but brake dust, rubber, & oily finger prints will remain. The surface must be cleaned with paint thinner or mineral spirits for the paint to properly adhere.

I would recommend not painting the edge otherwise the paint may still come off when the tire is mounted. The wheel may be put in a oven after painting to harden it and speed up the curing process.
I actually used wax and grease remover