Do you guys charge more for cars that have these wheels? I spend about an hour to clean the wheels fully, especially the ones that do not have a coating on it and feels sandy on touch. Just recently did a BMW m4 2015 with OZ satin black finish wheels. After cleaning the wheels, the wheels still look dirty even when it is clean. Talked to the owner and he said he bought the car used with the wheels. I guess the previous owner or detailer did not use the right chemicals and tools to clean the wheels since it has a lot of streaking, spots, fading, and spot failing. Even after cleaning the wheels, when I pull the car out of the garage, the wheels are sprinkled with orange brake dust and looks a bit dirty. Am I doing something wrong here or is this normal? I would usually clean the brake dust off with Dr beasleys.

Thanks!