I applied Hot Rims Brake Dust Barrier to my G8's wheels two weeks ago after an ONR bath. I did not clay bar the wheels before application, simply wiped them down at the end of the ONR bath. We've had a couple of rain/snow storms since then. Today at lunch time I gave her another ONR bath. I was delighted at how clean the wheels were. To my eye they looked cleaner than the paint and the residual dirt on the rag seemed to confirm this. They cleaned up with a brief ONR spritz and a quick wipe with an old MF rag. I give it two big thumbs up and strongly recommend it's purchase and use. Also, it applies easier than the other versions on the market with less runs and drips.
Next on the list to buy and try: Meguiar's Rinse Free Express Wash