18
X5 Updates
Transmission
The X5 4.6iS is available only with a ZF A5S 440Z 5-speed automatic transmission which
features modified internal components. Many internal components, including the torque
convertor have been modified to handle the increased torque and horsepower.
The transmission is specific to the X5 4.6iS and no other transmission should be substitut-
ed.
Programming of the transmission is also changed to better accommodate the vehicle.
Transmission management will be by EGS 8.60.2.
Transmission diagnostics will be handled in the same manner as other models.
Brakes
Front and rear brakes are upgraded on the X5 4.6iS.
Brake rotor size is increased from the 13.1 in. front normally found on the X5 4.4 to a size
of 14.0 in. on the 4.6iS.
While rear brake rotor diameter remains the same on the 4.6iS at 12.8 in., the thickness of
the rotor is increased and the rear rotor is now ventilated similar to the front rotor.
With these changes brake calipers, brake rotors and brake pads for both front and rear are
vehicle specific for the X5 4.6 and similar components from other models may not be inter-
changed.
