2012 MERCEDES-BENZ SL ROADSTER dimensions

clock roof AUX interior lights wiring tyre pressure

Page 608 of 637

MERCEDES-BENZ SL ROADSTER 2012 Owners Manual Radio type approval for the tyre pres-
sure monitor Country Radio type approval number
Brazil 1489-10-4415
Model: MRXMERCTX1
Dubai TRA, Registered-NO:
0016161/08
TRA, Registered NO
ER0076990/11
Dealer

Radio type approval for the tyre pres-
sure monitor Country Radio type approval number
Brazil 1489-10-4415
Model: MRXMERCTX1
Dubai TRA, Registered-NO:
0016161/08
TRA, Registered NO
ER0076990/11
Dealer-NO: DA0047074/10
Morocco MR5526 ANRT 2010/
27/04/2010
MR6706 ANRT 2011/
17/11/2011
Philip-
pines ESD-1105558C
Serbia И 011 12
Singa-
pore Compliance with IDA Standard
N0140-09
South
Africa TA-2008/1068
TA-2011/1370
Changing a wheel
Flat tyre
You can find information on what to do in the event of a flat tyre in the "Breakdown assis-
tance" section (Y page 578). Information on
driving with MOExtended tyres in the event of a flat tyre can be found under "Breakdown
assistance" (Y page 578). Interchanging the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tyres have different dimensions. The wheel brakes or suspension components may also be damaged. There is a risk of acci-
dent.
Interchange front and rear wheels only if the
wheels and tyres are of the same dimensions.
! On vehicles fitted with a tyre pressure
monitor, electronic components are loca-
ted in the wheel.
Tyre-fitting tools should not be applied in
the area of the valve, as this could damage
the electronic components.
Only have tyres changed at a qualified spe- cialist workshop.
Interchanging front and rear wheels of differ-
ing dimensions can render the general oper-
ating permit invalid.
Always pay attention to the instructions and
safety notes when changing a wheel
(Y page 606).
The wear patterns on the front and rear tyres
differ, depending on the operating conditions. Interchange the wheels before a clear wear
pattern has formed on the tyres. Front tyres
typically wear more on the shoulders and the
rear tyres in the centre.
On vehicles that have the same size front and rear wheels, you can interchange the wheels
every 5,000 to 10,000 km depending on the
degree of tyre wear. Ensure the direction of
rotation is maintained.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tyre pressure and, if necessary, restart the tyre pressure loss
warning system or the tyre pressure monitor. Direction of rotation
Tyres with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of aquaplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation. Changing a wheel
605Wheels and tyres Z

Page 617 of 637

MERCEDES-BENZ SL ROADSTER 2012 Owners Manual Winter tyres
R19
Tyres Light-alloy wheels
FA: 255/35 R19 96 V XL M+S
i4
RA: 285/30 R19 98 V XL M+S i4 FA: 9.0 J x 19 H2 ET 27
RA: 10.0 J x 19 H2 ET 48
Emergency spare wheel
Important safety notes
G
WA

Winter tyres
R19
Tyres Light-alloy wheels
FA: 255/35 R19 96 V XL M+S
i4
RA: 285/30 R19 98 V XL M+S i4 FA: 9.0 J x 19 H2 ET 27
RA: 10.0 J x 19 H2 ET 48
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
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 600).
The applicable value is found on the wheel or
under "Technical data" (Y page 617).
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.
i If you are driving with the collapsible
emergency spare wheel fitted, the tyre
pressure loss warning system or the tyre
pressure monitor cannot function reliably.
Do not restart the tyre pressure loss warn-
ing system/tyre pressure monitor until the
defective wheel has been replaced with a
new wheel.
Vehicles with a tyre pressure monitor:
for a few minutes after an emergency spare wheel is fitted, the system may still display
the tyre pressure of the removed wheel.
The value displayed for the mounted emer-
gency spare wheel is not the same as the
current tyre pressure of the emergency
spare wheel.
4 Observe notes on "Large wheels" in the "Wheel/tyre combinations" section. 614
Emergency spare wheelWheels and tyres

Page 632 of 637

MERCEDES-BENZ SL ROADSTER 2012 Owners Manual Vehicle data
General notes
Please note that for the specified vehicle
data:
R the heights specified may vary as a result
of:
- tyres
- load
- condition of the suspension
- optional equipment
R optiona

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