This dealership stuff is a big scam. If they want some good protection and a great look, check out optimum opti-gloss or car pro cquartz UK. These are both consumer available products that present easy installation. Otherwise if you are looking for quick protection, menzerna power lock or sonax...
Steam cleaning exteriors is risky because there is no lubrication factor, which will then add the possibility of scratches or swirls!!! If you pre-soak with something then steam the surface you might be a little safer but still will never beat the power of a traditional wash! Trust me on this...
sand it out first! Get a brand new pencil, a hole puncher and some good but hefty sand paper (#800 i would suggest for blending purposes) hole punch out a piece and glue it to the eraser. stick the glued sand paper pencil right on there and spin the pencil so you are sanding the area out then...
yes that would be the best bet for fixing it! How long after the coating was cured or had started to cure was the vehicle driven? There is a possibility that if it was soon after it could be some tire-fling from driving. light dust possibly!
This is why PRE-INSPECTION is an absolutely HUGE part of our job. I always am trying to urge this to others and everyone around me in our industry, if you dont inspect first hand with the customer there, then it is your fault. Not saying you did this at all, but what i am saying is that you did...
in my experience, when the water you are using has lots of impurities, it will cause top layer surface rust on the rotors. brake rotors are made of iron so with any type of moisture touching them they will rust easily on the surface layer. i use de-ionized water when i wash and never get any...
how long did you let the coating cure for? which coating did you use as well? IMO it looks like left over compound/polish that was coated over! easy to happen especially if its your first time coating. make sure you IPA every last inch of the vehicle before coating. Inspect, inspect again, and...