BMW ActiveHybrid X6 2010 - Manual (Page 30)

Things
to re
memb
er when
driving
28
Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on
rotors, while contaminants accumulate on the
brake pads. This occurs because the minimum
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.
Should corrosion form on the brake rotors, the
brakes will tend to respond with a pulsating
effect that even extended application will fail to
cure.
Online Edition for Part no. 01 41 2 603 632 - © 09/09 BMW AG Online Edition for Part no. 01 41 2 603 632 - © 09/09 BMW AG