Quote:
Originally Posted by mechman
Could it be the frequency isolator mounted in the center of the rear subframe causing that weird noise trying to isolate all the other noises in the cabin? It might be that at low speeds the noise from the isolator is louder than all the other possible noises in the cabin.
You could try disconnecting it (if possible) to see if the noise goes away
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I was looking at that the last time it was in the air. It should be easy to remove, though I really don’t know if I’ll devote much time or effort at this point. Based on the feedback from other owners here as well as my experience with the other car, it’s likely a “normal” design characteristic. Could even be something like a software glitch causing the adaptive shocks to make noise. F30s had a similar issue.
I’m hoping it’s something BMW knows about and is investigating. I think we have a chassis ear setup somewhere that I might play around with. Maybe I can isolate it. Otherwise, I think I’m keeping the radio on and trying to ignore it.