Mercedes-Benz SL 2008 Owner's Manual page 278

Put the protective film provided for the
X
emergency spare wheel* over the collaps-
ible emergency spare wheel*.
Store the collapsible emergency spare
X
wheel* in the spare wheel well under the
luggage compartment.
Fasten the collapsible emergency spare
X
wheel* in place through the protective film
using the screw.
MOExtended run-flat system*
The MOExtended run-flat system must only
be used in conjunction with the tyre pressure
loss warning system or the tyre pressure
monitor*.
!
The maximum permissible distance which
can be driven in run-flat mode depends on
the load in the vehicle. It is 50 km if the
vehicle is partially laden and 30 km if fully
laden.
The maximum range that can be driven in
emergency operation is measured from the
point at which the pressure loss warning
message appears in the multi-function dis-
play.
* optional
You must not exceed a maximum speed of
80 km/h.
G Risk of accident
The handling characteristics of your vehicle
deteriorate in run-flat mode, for example:
when cornering
R
when braking
R
when accelerating rapidly
R
Adapt your driving style accordingly and
avoid sudden changes in direction and sud-
den acceleration, as well as driving over
obstacles (i.e. kerbs, potholes), and driving
off-road. This is particularly the case when
the vehicle is heavily laden.
The maximum permissible distance that
can be driven in run-flat mode depends to
a large extent on the loads placed on the
vehicle. It can be shorter due to high
speeds, a heavy load, sudden acceleration
and/or manoeuvring, the road surface con-
dition, outside temperature, etc., or further
if you drive carefully and conservatively.
Do not continue to drive in run-flat mode if:
you hear banging noises
R
the vehicle starts to shake
R
you see smoke and smell rubber
R
Practical advice
®
R ESP is intervening constantly
there are tears in the sidewalls of the tyre
R
After driving in run-flat mode, you must
have the rims checked for damage at a
qualified specialist workshop which has the
necessary specialist knowledge and tools
to carry out the work required. The faulty
tyre must be replaced in every case.
Mercedes-Benz recommends that you use
a Mercedes-Benz Service Centre for this
purpose. In particular, work relevant to
safety or on safety-related systems must be
carried out at a qualified specialist work-
shop.
i
On a vehicle with MOExtended tyres, only
use MOExtended spare tyres. These must
be of the size specified for the vehicle.
Flat tyre
Z
275