From BMW documentation...take note of the warning...it's the diff's COVER that should NOT be used...and I distinctly detect that care should be given as to some type of protection between the lift and vehicle's body since it says to check condition of "rubber" contact points:

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• 2015 f06 650ix GC (Moonstone exterior/Cohiba brown Merino Leather interior)
• 2014 f15 X5 50i (Space Gray exterior/Mocha Nappa Leather interior)