The guys from the dealership workshop and the local chapter of the bmw club advise thrashing the daylights out of them from day one.
Those who keep their cars for 10 plus years claim they are the better for it in the long run, use less oil and have more power.
(Note these are unsubstantiated claims made my others that I am merely passing on)
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Dr Stig
2010 Z4 35is
2011 X3 30d M Sport
Australia
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