Update:
Got a call from my service advisor today.(He is super friendly btw)
- They were not able to reproduce the noise. Funny because I always hear it almost everyday. This seems like the visiting a doctor thing
- I have some noise coming from rear suspension when going over speed bumps, they noticed it too and ordered parts to replace it
- They told me there's a plastic part(cover) in rear differential that is supposed to spin together when wheels spin. They are suspecting this might be making the weird noise when not function correctly. So they ordered this part from BMW Germany as well
Parts needs to be ordered and delivered to US and installed which may take over a month from now.
I won't be able to drive my dream car in the mean time but looking at the bright side, it is winter in Chicago. Would have been happy if it was other Ms which is RWD only. F90 is meant to be driven in snow!
Will keep you guys posted. For those who are going through the same problem, kindly share your status here as well.
Thanks.
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