It only firms up the suspension on the non M X5/X6. Even then it is "barely" noticeable. No change in steering or throttle or shifts.
Other BMW models do various things , but not this one. (And I'm not sure about the X5M/X6M)
2012 Vermillion X6 50i -CWP, Vent Seats, Tech, Sport, Premium Sound, Premium, Active Steering, 3 rear seats, BMW Apps, Space Saver Spare
2011 1M, Black loaded sans sat radio