For a beginner, the service station will seem somewhat incomprehensible, but the masters are excellent, everyone knew their business, the place where they are responsible for their work. But to understand this, unfortunately, it takes time and getting used to their service methods :)
BMW analysis
I took good racks from them.
But the brake discs were worn out.
the caliper was not told to measure the wear, I think they knew about the wear, because they did not provide the tool.