General Information
General informationAll models
Warning systems
BMW AG offers two different systems to warn the driver of a drop in tyre pressure.
System Description Measuring principle
RDC Tyre pressure control Tyre pressure/temperature
RDW Tyre pressure warning Comparison of wheel speeds
Emergency running systems
In addition to the warning systems two emergency running systems are also employed to prevent a depressurised tyre from caving in:
Components of emergency running system with self-supporting tyres:
RDW (standard equipment) Tyre pressure warning
RDC (available as option from 03/2000) Tyre pressure control
SST Self Supporting Tyre
EH2 disc wheel Disc wheel with Extended Hump 2
Components of emergency running system with integrated support ring:
Support ring Note: In the future only for heavy safety vehicles (E38/3)
RDC (optional) Tyre pressure control
H2 disc wheel Standard disc wheel with Hump 2