I had already contact with him.
As mentioned, engineers from Munich investigated that also on my car. They said in some cases they use that bearings from 7 series, primary on 6 cylinders engines because of weight, whatsoever. They also said it occurs mostly on cars without panorama roof. Because cars with panorama roof have some more strengthen body.
In my case they will use it thankfully also in my 520d. It isn't common they said.
Munich is aware of that issue. But it's "by design". However I do not agree with that as my car did'nt had this issues when I bought it. After talking to captain konnius from bimmerpost and also reading the G30 vibration fix, doing a lot of research after one year, I'm sure the bearings will resolve this issue in my case.
The car from captain_konnius was reworked in r&d in Munich with 7 series bearings. It was a 540i touring.