BMW Assist
182
BMW Assist
To avoid posing an unnecessary haz-
ard, both to your own vehicle's occu-
pants and to other road users, only make
entries with the vehicle stationary.<
Requirements
If the following requirements are met, you
can call up BMW Assist:
>Telephone is connected and switched
on
>The lock code has been entered
>The mobile communications network is
available
>GPS reception for transmission of the
data is ensured.
The position of the vehicle can influ-
ence the mobile communications/
GPS reception. As a rule, mobile communi-
cations/GPS reception is only possible
under a clear sky.
When vehicle data is exchanged with the
BMW Service Center, a corresponding
message appears on the Control Display.<
Roadside Assistance of the
BMW Group
Here, you can automatically dial the num-
ber of the Roadside Assistance of the BMW
Group, your BMW center or BMW Cus-
tomer Relations.
To contact Roadside Assistance, for exam-
ple in the event of a breakdown:
1.Select "BMW Assist" and confirm your
selection
2.Select "BMW Services" and confirm
your selection
3.Select "Roadside Assistance" and con-
firm your selection.
The current vehicle position is dis-
played4.Select "ACTIVATE" and confirm your
selection.
The data of your vehicle is transmitted
to BMW center.
The BMW center forwards the current vehi-
cle position and the customer profile and
other vehicle data to the relevant Roadside
Assistance service.
To speak to your BMW center or BMW
Customer Relations your portable phone
must be connected to the cradle in the cen-
ter console. A voice connection will be
established.
For technical reasons, the emergency
call cannot be guaranteed under
unfavorable conditions.<
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Mobility
191Reference
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Temperature
The temperature grades are A, the highest,
B and C, representing the tire's resistance
to the generation of heat and its ability to
dissipate heat when tested under con-
trolled conditions on a specified indoor lab-
oratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A repre-
sent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive load-
ing, either separately or in combination,
can cause heat buildup and possible tire
failure.<
RSC: run-flat tires
You will recognize run-flat tires by a circular
symbol containing the letters RSC on the
side of the tire, refer to page192.
M+S
Winter and all-season tires.
These have better winter properties than
summer tires.
Tire condition
Inspect your tires frequently for treadwear,
signs of damage and for foreign objects
lodged in the tread. Check the tread depth.
Tire tread
The tread depth should not drop below
εin/3 mm, although, for example, Euro-
pean legislation only specifies a minimum
tread depth of κ/ΦΚin/1.6 mm. At tread
depths below εin/3 mm, there is an
increased risk of high-speed hydroplaning, even when only small amounts of water are
present on the road surface.
As winter tires display a noticeable loss in
their ability to cope with cold-weather driv-
ing conditions once the tread wears to
below κ/Κin/4 mm, to ensure continued
safety you should always have such tires
replaced.
Wear indicators at the tread-groove base,
refer to arrow, are distributed over the tire's
circumference and are marked on the side
of the tire with TWI – Tread Wear Indicator.
These indicators signal at a tread depth of
κ/ΦΚin/1.6 mm that the legally permitted
wear limit has been reached.
Wheel/tire damage
Due to low-profile tires, please note
that wheels, tires and suspension
parts are more susceptible to road hazard
and consequential damages.
Unusual vibrations encountered during
normal vehicle operation can indicate tire
failure or some other vehicle defect. This
can, for example, be caused by driving over
curbs. These kinds of problems may also
be signaled by other changes in vehicle
response, such as a strong tendency to pull
to the left or right.
In these cases reduce speed immediately.
Drive carefully to the next BMW center or
tire dealer, or have the vehicle towed to one
of these locations if necessary.
Tire damage, extending to sudden and
complete loss of pressure in extreme
cases, can pose a potentially lethal safety
hazard for the vehicle's occupants and
other road users alike.<
