R 18
Tyres Wheels
BA: 225/40 R18 92 H XL M+S
i8, 9 BA: 7.5 J x 18 H2 ET 52
Emergency spare wheel
Important safety notes
G
WARNING
The wheel/tyre dimensions and the tyre type of the spare wheel/emergency spare wheel
and the wheel to be replaced may differ. Fit-
ting a spare wheel/emergency spare wheel
may severely impair the driving characteris-
tics. There is a risk of accident.
To prevent hazardous situations:
R Adapt your driving style accordingly and
drive carefully.
R Never fit more than one spare wheel/emer-
gency spare wheel if the dimensions are
different to those of the wheel being
replaced.
R Only use a spare wheel/emergency spare
wheel briefly if the dimensions are different to those of the wheel being replaced.
R Do not switch off ESP ®
.
R Have the spare wheel/emergency spare
wheel in question replaced at the nearest
qualified specialist workshop. Make sure
that the wheel/tyre dimensions and tyre
type are correct.
When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 80 km/h.
Snow chains must not be fitted to emergency
spare wheels. General notes
Apart from some country-specific variants,
vehicles are not equipped with an emergency spare wheel. Emergency spare wheels are
specific to the vehicle. For more information
on which emergency spare wheels are
approved for your vehicle, consult a qualified
specialist workshop.
You should regularly check the pressure of all your tyres, including the emergency spare
wheel, particularly prior to long trips, and cor- rect the pressure as necessary (Y page 356).
The value on the wheel is valid. In addition, the
emergency spare wheel tyre pressure can be found under "Technical data" (Y page 382).
An emergency spare wheel may also be fitted
against the direction of rotation. Observe the time restriction on use as well as the speed
limitation specified on the emergency spare
wheel.
Replace the tyres after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
If you are driving with the emergency spare
wheel fitted, the tyre pressure loss warning
system or the tyre pressure monitor cannot
function reliably. Only restart the tyre pres-
sure loss warning system/tyre pressure mon- itor when the defective wheel has been
replaced with a new wheel.
Vehicles with tyre pressure monitor: after
mounting an emergency spare wheel, the sys- tem may still display the tyre pressure of the
removed wheel for a few minutes. The value
displayed for the position where the emer-
gency spare wheel is fitted is not the same as
8 Use of snow chains not permitted. Observe the notes in the "Snow chains" section.
9 Observe notes on "Large wheels" in the "Wheel/tyre combinations" section. 380
Emergency spare wheelWheels and tyres
Dimensions and weights
You can find the correct values for your model
with the help of the VIN on the vehicle iden-
tification plate (Y page 386). Model
: :
Maxi- mum
head- room ;
;
Opening height B 180
B 180 BlueEFFI-
CIENCY Edition
B 160 CDI
B 180 CDI
B 180 CDI Blue-
EFFICIENCY Edi-
tion
1873 mm 1980 mm
All other models
1874 mm 1981 mm
All other models
Vehicle width
including exterior
mirrors
2010 mm
Vehicle width
excluding exterior
mirrors
1786 mm
Wheelbase
2699 mm
Maximum boot load
100 kg
Maximum roof load
75 kg Model Vehicle length
B 180 CDI (246.207)
B 200 CDI (246.201) 4359 mm
All other models
4393 mm
Model Vehicle height
B 180
B 180 BlueEFFI-
CIENCY Edition
B 160 CDI
B 180 CDI
B 180 CDI BlueEFFI-
CIENCY Edition
1557 mm
All other models
1558 mm
Trailer tow hitch
Mounting dimensions
! If you have a trailer tow hitch retrofitted,
changes to the engine cooling system may
be necessary, depending on the vehicle
type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chas- sis. 394
Trailer tow hitchTe
chnical da ta
