Mine will get that driveline shake if it doesn't downshift on a incline and is between 1500 and 1800 rpm. I have seen many people comment or complain about this, and many people get mad when BMW won't "fix it" for them. It is very rare on mine, and only at low RPMs lugging up a hill, so I am not worried about it. I also don't notice it if in Sport or Sport+ mode, probably because the RPMs are higher.
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