5 Series E39 525tds (M51) TOUR
H2 disc wheel (standard disc wheel) for emergency
running system with integrated support ring
(1) Hump 2 of standard disc wheel
EH2 disc wheel for emergency running system with
self-supporting tyre
(1) Extended Hump 2 of disc wheel
(2) Drop centre relocated a few millimetres to the
centre (precentring on outside)
Note:
The new EH2 disc wheels (extended Hump 2 inner and outer) will be used more frequently on BMW vehicles
in the future as they can also help to delay standard tyres from being lost in the event of a drop in tyre
pressure.
Example: from current 1.1 bar to 0.6 bar (X5 or Landrover disc wheel)
Emergency running system with integrated support ring
(In the future, primarily on heavy safety vehicles)
The support ring is made of a high-strength resilient plastic and is fitted on the disc wheel inside the tyre. The support
ring can only be removed using special tools which have been specially approved by BMW. It can only be removed
after destroying the tyre.
Emergency running systems with integrated support ring are used in particular on heavy safety vehicles. They allow
the vehicle to be driven away from a potential danger without dropping speed even if the tyres have suffered a
complete loss of pressure (flight situation).
It is possible as an option to have the tyre pressure monitored by an RDC system. The RDC is installed by pressing
the components into the support ring before it is fitted.
Wheel structure with integrated support ring
SBT Tyres with emergency running characteristics and tyre pressure warning systems A
BMW AG - TIS
20.02.2013 22:26
Issue status (12/2007) Valid only until next DVD is issued
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