Hissing sound in the background on BMW X7 G07

Question

On the test drive with the X5 M50i, I noticed it when accelerating. As if a sharp wind is blowing through a crack or something is hissing softly.

Now I have an X7 M50i, same background noise, clearly synthetic from the speakers in the "Sport" mode.

Does anyone know something about this? Am I right? Reason for this fake sound mixture? The 50i makes a very good impression even without artificial sound.

Answer 1

I have the same issue on my BMW X7.  This has been the case since I had the windshield replaced by the local BMW dealership in Columbia South Carolina.  They say it is normal.   I have a 59 second video with the Air Conditioner off to eliminate the AC noise.  The windshield is not leaking.  I wash the vehicle 4 to 5 times a week and have had no leaks.  But the hissing sound continues.   Not what I expected from a BMW.