I’ve been detailing a little under a year, and I’m just so lost on how detailers are able to get the inner wheel barrels so clean? I struggle with this a lot. Im referring to the red portion in the picture.
I’ve used PNS break buster as well as Adams wheel cleaner full strength but I still never seem to be able to get it fully clean. Tried iron remover as well. Usually I can only get it about 50% clean. Even on newer cars. There’s always a bunch of leftover break dust and I hate leaving my clients rims like that. Any advice? Should I start using wheel acid instead?