Floaty comes from front toe angle too close to straight or worse: toe out!

I think BMW calls for 0.15° toe in for the best stability (at the expense of outer tire wear).

Make sure the tire pressure matches the b pillar numbers and get the alignment.

Rear wheels toe out will also cause oversteer = wishy washy feeling. (and terrible inside tire wear; when my rear ball joints failed i wore the tires to the red neck wear bars* in under two weeks)

*Steel belts.

Road feel comes standard on e53 that should be expected. Groan is usually a ball joint. Hopefully they check ball joints before adjusting toe.

–awr–

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