Are you saying you feel a thump from the back when driving? Example: under power constant speed, almost like power is cut from the engine for 1/4 sec when you hit an expansion joint? Mine does that it's the rear subframe mount: my theory: when the weight unloads from the road dip, it effectively "slacks" the drivetrain. When slack is removed on landing, drivetrain whip.


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2011 E70 • N55 (me)
2012 E70 • N63 (wife)