BMW F12 2011 Technical Training Manual page 56

F12￿Chassis￿Dynamics
5.￿Steering
The￿HSR￿actuator￿is￿designed￿for￿a￿maximum￿stroke￿of￿±￿8￿mm￿which￿produces￿a￿maximum￿steering
lock￿of￿±￿3°￿at￿the￿wheel.
The￿worm-and-nut￿rear-wheel￿steering￿gear￿is￿self-inhibiting.￿This￿means￿that￿if￿the￿system￿fails,￿the
vehicle￿has￿the￿same￿drivability￿is￿a￿vehicle￿without￿rear￿wheel￿steering.
The￿components￿of￿Integral￿Active￿Steering￿"active￿steering￿AL"￿and￿"rear￿axle￿slip￿angle￿control"￿can-
not￿be￿ordered￿separately￿and￿are￿only￿available￿with￿the￿Integral￿Active￿Steering￿package￿(SA￿2VH).
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