2012 MERCEDES-BENZ SLK55AMG tires

Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa
corresponds to 1 psi. Another unit for tire
pressure is bar. There are 10 0kilopascals
(kPa) to 1bar. Load index
In addition to the load-bearing index, the load
index may also be imprinted on the sidewall
of the tire. This specifie sthe load-bearing
capacity more precisely. Curb weight
The weight of a vehicle with standard
equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air-
conditioning system and optional equipment
if these are installed in the vehicle, but does
not include passengers or luggage. Maximum load rating
The maximum load rating in kilograms or
pounds is the maximum weight for which a
tire is approved. Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire. Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two. PSI (pounds per square inch)
As tandard uni tofmeasure for tire pressure. Aspect ratio
Relationship between tire height and tire
width in percent. Tire pressure
This is pressure inside the tire applying an
outward force to each square inch of the tire's
surface. The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold. Tire pressure of cold tires
The tires are cold:
R if the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
R if the vehicle has not been driven more than
1 mile (1.6 km). Tread
The part of the tire that comes into contact
with the road. Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim. Sidewall
The part of the tire between the tread and the
bead. Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
part and more than 2.3 kg (5 lb). These 314
Definition of terms for tires and loadingWheels and tires

optional extras, such as high-performance
brakes, level control, a roof rack or a high-
performance battery, are not included in the
curb weight and the weight of the
accessories. TIN (Tire Identification Number)
This is a unique identifier which can be used
by a tire manufacturer to identify tires, for
example for a product recall, and thus identify
the purchasers. The TIN is made up of the
manufacturer's identification code, tire size,
tire type code and the manufacturing date. Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire. Traction
Traction is the result of friction between the
tires and the road surface. Treadwear indicators
Narrow bars (tread wear bars) that are
distributed over the tire tread. If the tire tread
is level with the bars, the wear limit of 0008in
(1.6 mm) has been reached. Occupant distribution
The distribution of occupant sinavehicle at
their designated seating positions. Total load limit
Rated cargo and luggage load plus
68 kilograms (150 lb), multiplied by the
vehicle's designated seating capacity. Changing
awheel Flat tire
The "Breakdown assistance" section
(Y page 275) contains information and notes
on how to deal with a fla ttire. It also provides
instructions on changing a wheel or mounting
the spare wheel/emergency spare wheel. Interchanging the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the drivin gcharacteristics if
the wheels or tires have different dimensions.
The wheel brakes or suspension components
may also be damaged. There is a risk of
accident.
Rotate front and rear wheels only if the wheels
and tires are of the same dimensions.
Always pay attention to the instructions and
safety notes in the "Changing tires and
mounting the spare wheel" section
(Y page 276).
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the
intervals in the tire manufacturer's warranty
book in your vehicle documents. If this is not
available, the tires should then be replaced
every 3000 to 6000 miles (5000 to
10,000 km), or earlier if the tire wear requires
this. Do not change the direction of wheel
rotation.
Cleant he contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tire pressures.
For information on changing tires and
mounting the spare wheel, see (Y page 276). Changing
awheel
315Wheels and tires Z

!
On vehicles equipped with a tire pressure
monitor, electronic components are
located in the wheel.
Tire-mounting tools should not be used
near the valve. This could damage the
electronic components.
Only have tires changed at a qualified
specialist workshop. Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of hydroplaning. You will only gain these
benefits if the correct direction of rotation is
maintained.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
You may mount a spare wheel/emergency
spare wheel against the direction of rotation.
Observe the time restriction on use as well as
the speed limit specified on the spare wheel/
emergency spare wheel. Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel. Cleaning the wheels
G
WARNING
Do not use power washers with circular-jet
nozzles (dirt grinders) to clean your vehicle, in
particular the tires. You could otherwise
damage the tires and cause an accident. Wheel and tire combinations
Please bear the following in mind
! For safety reasons, Mercedes-Benz
recommends that you only use tires and
wheels which have been approved by Mercedes-Benz specifically for your
vehicle.
These tires have been specially adapted for
use with the control systems, such as ABS
or ESP ®
, and are marked as follows:
R MO =Mercedes-BenzO riginal
R MOE =Mercedes-BenzO riginal Extended
(tires featuring run-flat characteristics)
R MO1 =Mercedes-BenzO riginal (only
certain AMG tires)
Mercedes-Benz Original Extended tires
may only be used on wheels that have been
specifically approved by Mercedes-Benz.
Only use tires, wheels or accessories
tested and approved by Mercedes-Benz.
Certain characteristics, e.g. handling,
vehicle noise emissions or fuel
consumption, may otherwise be adversely
affected. In addition, when driving with a
load, tire dimension variations could cause
the tires to come into contact with the
bodywork and axle components. This could
resul tind amage to the tires or the vehicle.
Mercedes-Ben zaccepts no liability for
damage resulting from the use of tires,
wheels or accessories othe rthan those
tested and approved.
Information on tires, wheels and approved
combinations can be obtained from any
qualified specialist workshop.
i The recommended pressures for various
operating conditions can be found:
R on the Tire and Loading Information
placard with the recommended tire
pressures on the B-pillar on the driver's
side
R in the tire pressure table on the inside of
the fuel filler flap
Observe the notes on recommended tire
pressures under various operating
conditions (Y page 297).
Check tire pressures regularly, and only
when the tires are cold. Comply with the
maintenance recommendations of the tire 316
Wheel and tire combinationsWheels and tires

manufacturer in the vehicle document
wallet.
i Notes on the vehicle equipment –always
equip the vehicle with:
R tires of the same size on a given axle
(left/right)
R the same type of tires at a given time
(summer tires, winter tires, MOExtended
tires)
i On the following pages, you can find
information on approved wheel rims and
tire sizes for equipping your vehicle with
winter tires. Winter tires are not available
at the factory as standard equipmen tor
optional extras.
If you would like to equip your vehicle with
approved winter tires, you may also, in
certain circumstances, require rims of the
appropriate size. The sizes of the approved
winter tires may deviate from that of the
standard tires. This is dependent on the
model and the equipment installed at the
factory.
The tires and wheel rims, as well as further
information, can be obtained at a qualified
specialist workshop.
i Overview of abbreviations used in the
following tire tables:
R BA: both axles
R FA: front axle
R RA: rear axle
In the following table, the wheel/tire
combinations are assigned to the vehicle
models through variants, e.g. V1, V2 etc.: V1 SLK 250
V2 SLK 350
V3 SLK 55 AMG
i
Not all wheel and tire combinations are
available at the factory for all countries. Wheel and tire combinations
317Wheels and tires Z

Tires
Summer tires Allo
ywheels V1 V2 V3
FA
RA 225/45 R17 91 W
245/40 R17 91 W
21 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm)
8.5 J x 17 H2
Wheel offset: 1.42 in (36 mm) 001D 001D
—
FA
RA
225/45 R17 91 W MOExtended
22
245/40 R17 91 W
MOExtended 21, 22 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm)
8.5 J x 17 H2
Wheel offset: 1.42 in (36 mm) 001D 001D
—
FA
RA 225/40 R18 92 Y XL
245/35 R18 92 Y XL
21 7.5 J x 18 H2
Wheel offset: 1.65 in (42 mm)
8.5 J x 18 H2
Wheel offset: 1.42 in (36 mm) 001D 001D
—
FA
RA 235/40 ZR18 95
YXL
255/35 ZR18 94 YXL21 8.0 J x 18 H2
Wheel offset: 1.69 in (43 mm)
9.0 J x 18 H2
Wheel offset: 1.65 in (42 mm) — — 001D
Winter tires Alloy wheels V1 V2 V3
BA 225/45 R17 91 H M+S
0003 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm) 001D 001D
—
BA 225/45 R17 91 H
M+S0003MOExtended
22 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm) 001D 001D
—
BA 235/40 R18 95 V XL M+S
0003 8.0 J x 18 H2
Wheel offset: 1.69 in (43 mm) — — 001D
FA
RA 235/40 R18 95 V XL M+S
0003
255/35 R18 94 V XL M+S 000321 8.0 J x 18 H2
Wheel offset: 1.69 in (43 mm)
9.0 J x 18 H2
Wheel offset: 1.65 in (42 mm) — — 001D
21
Use of snow chains is not permitted .Observe the notes in the "Snow chains" section.
22 MOExtended tires (tires featuring run-flat characteristics) only in combination with an activated tire pressure
monitor. 318
Wheel and tire combinationsWheels and tires

Collapsible spare wheel
21Tires Steel wheel V1 V2 V3
145/70 - 17 92P
Tire pressure: 350 kPa (3.5 bar/51 psi) 4.5 B x 17 H2
Wheel offset: 0.47 in (12 mm) 001D 001D
—
175/55 - 18 95P
Tire pressure: 350 kPa (3.5 bar/51 psi) 6.0 B x 18 H2
Wheel offset: 0.98 in (25 mm) — — 001D
21
Use of snow chains is no tpermitted. Observe the notes in the "Snow chains" section. Wheel and tire combinations
319Wheels and tires Z

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 23).Notes on technical data
i The data stated here specifically refers to
a vehicle with standard equipment .Consult
a Mercedes-Benz Center for the data for all
vehicle variants and trim levels. Genuine Mercedes-Benz parts
All Mercedes-Benz Centers maintain a supply
of genuine Mercedes-Benz parts for
necessary service and repair work. In
addition, strategically located parts delivery
centers provide for quick and reliable parts
service.
There are more than 300,000 different
genuine Mercedes-Benz parts available for
Mercedes-Benz models.
Genuine Mercedes-Benz parts are subject to
strictq uality control .Each part has been
specially developed, manufactured or
selected for Mercedes-Ben zvehicles and
fine-tuned for them.
Therefore, only genuine Mercedes-Benzp arts
should be used. G
WARNING
Driving safety may be impaired if non-
approved parts, tires and wheels or safety-
relevan taccessories are used. This could lead to malfunctions in safety-
relevant systems, e.g. the brake system. This
could cause you to lose control of your vehicle
and cause an accident.
For this reason, Mercedes-Benz recommends
that you use genuine Mercedes-Benz parts or
parts of equal quality
.Only use tires, wheels
and accessories tha thave been specifically
approved for your vehicle.
! Air bags and Emergency Tensioning
Devices, as well as control units and
sensors for these restraint systems may be
installed in the following areas of your
vehicle:
R doors
R door pillars
R door sills
R seats
R dashboard
R instrument cluster
R center console
Do no tinstall accessories such as audio
systems in these areas. Do not carry out
repairs or welding .You could impair the
operating efficiency of the restraint
systems.
Have aftermarket accessories installed at
a qualified specialist workshop. Mercedes-
Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. H
Environmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
Always specify the vehicle identification
number (VIN) (Y page 323) and the engine
number (Y page 324) when ordering genuine
Mercedes-Benz parts. 322
Genuine Mercedes-Benz partsTechnical data

At temperatures below freezing:
X
Fill the washe rfluid reservoir with a mixture
of water and windshield washer fluid, e.g.
MB WinterFit. Adapt the mixing ratio to the
outside temperature.
X Down to 14 ‡ (002410 †): mix 1 part MB
WinterFit with 2 parts water.
X Down to 00244 ‡ (002420 †): mix 1 part MB
WinterFit with 1 part water.
X Down to 002420.2 ‡ (002429 †): mix 2 parts MB
WinterFit with 1 part water. Model Capacity
All models
3.7 US qt (3.5 l)
i
Add windshield washer fluid, e.g. MB
SummerFit or MB WinterFit, to the washer
fluid all year round. Vehicle data
Please note that for the specified vehicle
data:
R the heights specified may vary as a result
of:
- tires
- load
- conditio nofthe suspension
- optional equipment
R the vehicle length specified includes the
front license plate adapter. All models (except AMG vehicles)
Vehicle length
162.9 in (4138 mm)
Vehicle width
including exterior
mirrors
79.0 in (2006 mm)
Vehicle height
51.3 in (1303 mm)
Wheelbase
95.7 in (2430 mm) All models (except AMG vehicles)
Turning radius
34.5 ft (10.52 m)
Maximum trunk
load
220 lb (100 kg)
SLK 55 AMG
Vehicle length
163.2 in (4146 mm)
Vehicle width
including exterior
mirrors
79.0 in (2006 mm)
Vehicle height
51.2 in (1301 mm)
Wheelbase
95.7 in (2430 mm)
Turning radius
34.6 ft (10.55 m)
Maximum trunk
load
220 lb (100 kg) Vehicle data
329Technical data Z