MDM - i believe is M dynamic mode
It is the mode that is kind of between DSC on and DSC off
In this mode car is allowed for some slip, some spin, some slide, but just enough so you won't get yourself into trouble
I also think tranny behaves a bit more responsive in this mode
Quote:
M Dynamic Mode for the most satisfying track driving.
In the X5 M and X6 M, the potential of both xDrive and DPC have been fully exploited by BMW M. Via the MDrive menu, the driver can switch DSC to the M Dynamic Mode (MDM), in which –
• DSC’s threshold for intervening via the brakes and throttle is raised, allowing the driver to “push harder” in curves.
• A special xDrive program imparts a handling characteristic more like that of rear-wheel drive.
Together with DPC, these measures result in ultimate M-handling attributes. MDM facilitates maximum cornering speeds with very “late” DSC intervention…and, under the extreme tire-loading conditions at a curve’s apex, outstandingly high exit speeds, event when the road is wet. DSC can be fully de-activated (except for anti-lock braking) by a longer push on its button. What more could the expert driver ask for on a race or test track?
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