BMW 7 Series: General Information On Light Alloy Disc Wheels
NOTE: It is sometimes difficult to distinguish light alloy disc wheels visually from steel disc wheels.
Identifying features:
- Sticker on light alloy disc wheel. (1) = Indication "Aluminium"
- Wall thickness of rim dish: approx. 8 mm.
- Light alloy disc wheels are not magnetic.
- Light alloy disc wheels can be identified from their BMW parts numbers.
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Fig. 34: Identifying Light Alloy Disc Wheel Sticker
IMPORTANT:
- Use only BMW-approved two-part balancing weights.
- When fitting two-part balancing weights, always use specified tools.
- Do not straighten light alloy disc wheels: always replace damaged light alloy disc wheels.
- Notches in light alloy disc wheels can lead to cracking.
- Do not lubricate wheel nuts.
- When fitting tires, avoid damaging light alloy disc wheels, e.g. on sharpedged retaining claws on fitting machine.
INITIALIZING RUN FLAT INDICATOR (RPA)
NOTE: Checking the tire pressure is based on monitoring the speeds of the wheels in relation to each other. A tire puncture is detected and signalled by way of a deviation in specific speed ratios.
The four tires mounted on the vehicle are monitored while the vehicle is moving.
Initialization must be carried out in each case immediately after tire pressures have been corrected, after tires/wheels have been replaced and after repairs to the air spring system.
IMPORTANT: The Run Flat Indicator does not function when the vehicle is driven with the compact spare wheel.
Please refer to the relevant Owner's Handbook for details of the initialization procedure.
RDC RESETTING
NOTE: RDC monitors the tire inflation pressure in the four wheels.
Each tire incorporates an electronic wheel circuit, which constantly monitors the tire inflation pressure.
The system signals when the inflation pressure drops in one or more tires.
Resetting must be carried out in each case immediately after tire pressures have been corrected, after tires/wheels have been replaced and after repairs to the air spring system.
Please refer to the relevant Owner's Handbook for details of the resetting procedure.
READ NEXT:
Removing And Installing RDC (Tyre Pressure Control) Control Unit
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC
DAMAGE (ESD protection).
Necessary preliminary tasks
Remove right LUGGAGE COMPARTMENT WHEEL ARCH PANEL.
Disconnect plug con
Removing And Installing/Replacing RDC Reception Aerial
Necessary preliminary tasks
Remove front left UNDERBODY PANELLING
Disconnect plug connection (1).
Gently press retaining tabs apart in direction of arrow and remove RDC aerial
(2).
Fig. 46: Pres
Removing And Installing/Replacing An RDC Trigger Transmitter
(Front)
Necessary preliminary tasks
Detach WHEEL ARCH COVER front section at front
Disconnect plug connection (1).
Gently press lugs (2) apart.
Remove RDC sensor (3) in direction of arrow.
Fig. 56: Remo
SEE MORE:
Flywheel
REMOVING AND INSTALLING/REPLACING FLYWHEEL (N63)
Necessary preliminary tasks
Remove AUTOMATIC TRANSMISSION
Remove manual transmission
Remove clutch
Secure flywheel (1) with special tool 11 9 260.
Fig. 139: Securing Flywheel With Special Tool 11 9 260
Release flywheel screws in area (1).
Remov
Removing And Installing/Renewing Pressure Lines For Valve Block
(Short)
Notes
WARNING: DANGER OF POISONING if oil is ingested/absorbed through the
skin!
RISK OF INJURY if oil comes into contact with eyes and skin!
IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to
enter the hydraulic system.
Do not draw off hydraulic fluid (risk of contamination).
