My M850i G14, 2022, ca. 35TKM yesterday made buzzing noises on the motorway in the area from approx. 100 km/h. Sounds like it came from the rear axle. At least not from the front area. Surren was independent of speed. Under approx. 90 km/h it has disappeared again. Will ask BMW next week. But does anyone have any idea what it might be?