
Letter “T” preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only.
Tire width
Tire width  : indicates the nominal tire width
in millimeters.
Aspect ratio
Aspect ratio  ; is the dimensional
relationship between tire section height and
section width and is expressed in percentage.
The aspect ratio is arrived at by dividing
section height by section width.
Tire code
Tire code  = indicates the tire construction
type. The “R” stands for radial tire type. Letter
“D” means diagonal or bias ply construction;
letter “B” means belted-bias ply construction.
At the tire manufacturer’s option, any tire
with a speed capability above 149 mph
(240 km/h) can include a “ZR” in the size
designation (for example: 245/40 ZR 18). For
additional information, see “Tire speed
rating” ( Y page 236).
Rim diameter
Rim diameter  ? is the diameter of the bead
seat, not the diameter of the rim edge. The
rim diameter is indicated in inches (in).
Load indexGWarning!
The tire load rating must always be at least
half of the GAWR of your vehicle. Otherwise,
tire failure may be the result which may cause
an accident and/or serious injury to you or
others.
Always replace rims and tires with the same
designation, manufacturer and type as shown
on the original part.
GWarning!
Do not overload the tires by exceeding the
specified load limit as indicated on the Tire
and Loading Information placard on the
driver’s door B-pillar. Overloading the tires
can overheat them, possibly causing a
blowout. Overloading the tires can also result
in handling or steering problems, or brake
failure.
Load index  A is a numerical code associated
with the maximum load a tire can support.
For example, a load rating of 91 corresponds
to a maximum load of 1356 lb (615 kg) the
tire is designed to support. See also
“Maximum tire load”  (Y  page 231) where the
maximum load associated with the load index
is indicated in kilograms and lbs.
For additional information on the load index,
see “Load identification” ( Y page 238).
Speed symbol GWarning!
Even when permitted by law, never operate a
vehicle at speeds greater than the maximum
speed rating of the tires.
Exceeding the maximum speed for which tires
are rated can lead to sudden tire failure,
causing loss of vehicle control and possibly
resulting in an accident and/or serious
personal injury and possible death, for you
and for others.
Regardless of the tire speed rating, local
speed limits should be obeyed. Use prudent
driving speeds appropriate to prevailing
conditions.
Speed symbol  B indicates the approved
maximum speed (tire speed rating) for the
tire.
Summer tires
IndexSpeed ratingQup to 100 mph (160 km/h)Rup to 106 mph (170 km/h)Sup to 112 mph (180 km/h)Tup to 118 mph (190 km/h)236Tires and wheelsOperation
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Tire type code
Tire type code ? may, at the option of the
manufacturer, be used as a descriptive code
for identifying significant characteristics of
the tire.
Date of manufacture
The date of manufacture A identifies the
week and year of manufacture.
The first two figures identify the week,
starting with “01” to represent the first full
week of the calendar year. The second two
figures represent the year.
For example, “3208” represents the 32nd
week of 2008.
Tire ply material
iFor illustration purposes only. Actual data
on tires are specific to each vehicle and
may vary from data shown in above
illustration.
This marking tells you about the type of cord
and number of plies in the sidewall : and
under the tread ;.
Tire and loading terminology
Accessory weight 
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are available as factory-installed
equipment (whether installed or not).
Air pressure 
The amount of air inside the tire pressing
outward on each square inch of the tire. Air
pressure is expressed in pounds per square
inch (psi), kilopascal (kPa), or bar.
Aspect ratio 
Dimensional relationship between tire
section height and section width expressed
in percentage.
Bar 
Metric unit for air pressure. There are
14.5038 pounds per square inch (psi) to
1 bar; there are 100 kilopascals (kPa) to 1 bar.
Bead 
The tire bead contains steel wires wrapped by
steel cords that hold the tire onto the rim.
Cold tire inflation pressure 
Tire inflation pressure when your vehicle has
been sitting for at least 3 hours or driven no
more than 1 mile (1.6 km).
Curb weight 
The weight of a motor vehicle with standard
equipment including the maximum capacity
of fuel, oil, and coolant, and, if so equipped,
air conditioning and additional optional
equipment, but without passengers and
cargo.
DOT (Department of Transportation) 
A tire branding symbol which denotes the tire
meets requirements of the U.S. Department
of Transportation.
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XRemove mechanical key ; from the
SmartKey (Y page 299).
XInsert mechanical key ; into the driver’s
door lock.
XTurn mechanical key ; clockwise to
position 1.
The vehicle is locked.
XTurn mechanical key ; back and remove
it from the driver’s door lock.
XCheck whether the doors and the tailgate
are locked.
iThis procedure does not arm the anti-
theft alarm system, nor does it lock the fuel
filler flap.
Unlocking and opening the tailgate
If the tailgate can no longer be unlocked and
opened using button F on the SmartKey
or the KEYLESS-GO function, use the
emergency release to unlock and open the
tailgate.
The emergency release is located on the
inside of the tailgate.
A minimum height clearance of 6.9 ft
(2.10 m) is required to open the tailgate.
XRemove the mechanical key from the
SmartKey (Y page 299).
XInsert mechanical key ; into the opening
in trim :.
XPress mechanical key ; in direction of the
arrow and open the tailgate.
! The tailgate swings up and beyond the
rear bumper when opening. Therefore,
make sure there is sufficient clearance
above and behind the vehicle.
XOpen the tailgate.
iIf the vehicle has previously been locked
from the outside using the SmartKey or
KEYLESS-GO, opening the tailgate from the
inside using the emergency release will
trigger the anti-theft alarm system.
To cancel the alarm, do one of the
following:RInsert the SmartKey into the starter
switch.
RPress button % or & on the
SmartKey.
In vehicles with KEYLESS-GO:RPull an outside door handle.
The SmartKey must be within 3 ft (1 m)
of the vehicle.
RPress the KEYLESS-GO start/stop
button.
The SmartKey must be inside the vehicle.
300Unlocking/locking manuallyPractical hints
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Rreversible ratchet
R vehicle tool kit box
R electric air pump
For information on where to find the
respective items, see “Where will I find ...?”
( Y  page 260) and ( Y page 262).
i Vehicles without spare wheel are not
factory-equipped with the tools required for
a wheel change such as a jack or a wheel
wrench. Some tools required for a wheel
change are specific to your vehicle.
Contact an authorized Mercedes-Benz
Center to obtain the tools approved for
your vehicle. This section describes the
wheel change using the tools approved and
recommended for your vehicle.
Lifting the vehicle
GWarning!
When jacking up the vehicle, only use the jack
which has been specifically approved by
Mercedes-Benz for your vehicle.
The jack is designed exclusively for jacking up
the vehicle at the jack take-up brackets built
into both sides of the vehicle. Make sure the
jack arm is fully seated in the jack take-up
bracket. The jack must always be vertical
when in use, especially on inclines or
declines.
The jack is intended only for lifting the vehicle
briefly for wheel changes. It is not suited for
performing maintenance work under the
vehicle. To help avoid personal injury, use the
jack only to lift the vehicle during a wheel
change.
Never get beneath the vehicle while it is
supported by the jack. Keep hands and feet
away from the area under the lifted vehicle.
Always lower the vehicle onto sufficient
capacity jackstands before working under the
vehicle.
Always engage the parking brake firmly and
block the wheels with wheel chocks or other
sizeable objects before raising the vehicle
with the jack. Do not disengage the parking
brake while the vehicle is raised.
Make sure that the ground on which the
vehicle is standing and where you place the
jack is solid, level and not slippery. If
necessary, use a large underlay. On slippery
surfaces, such as tiled floors, you should use
a non-slip underlay, for example a rubber mat.
Do not use wooden blocks or similar objects
to support the jack. Otherwise the jack may
not be able to achieve its load-bearing
capacity if it is not at its full height.
Never start the engine when the vehicle is
raised.
Also observe the notes on the jack.XPrevent the vehicle from rolling away by
blocking wheels with wheel chocks or other
sizeable objects.
When your vehicle is equipped with a wheel
chock, it is included with the vehicle tool kit
( Y  page  260). For information on setting up
the collapsible wheel chock, see
( Y  page 261).
When changing a wheel on a level surface:
XPlace a wheel chock or other sizeable
object in front of and another wheel chock
or other sizeable object behind the wheel
that is diagonally opposite to the wheel
being changed.
Always try lifting the vehicle using the jack on
a level surface. However, should
circumstances require you to do so on a hill:
XPlace wheel chocks or other sizeable
objects on the downhill side in front of both
wheels on the side opposite to the side on
which the wheel is to be changed.GWarning!
Only jack up the vehicle on level ground or on
slight inclines/declines. Otherwise, the
vehicle could fall off the jack and injure you or
others.
Flat tire313Practical hintsX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 313Z 

Vehicle specification GLK 350 
(204.956)
The quoted data apply only to the standard
vehicle. Contact an authorized Mercedes-
Benz Center for the corresponding data of all
special bodies and special equipment.
i The GLK 350 is available in the USA only.Engine GLK 350Engine, type272Mode of operation4-stroke engine,
gasoline injectionNo. of cylinders6Bore3.66 in (92.90 mm)Stroke3.39 in (86.00 mm)Total piston 
displacement213.5 cu in
(3  498 cm 3
)Compression 
ratio10.7:1Output acc. to 
SAE J 1349 14268 hp/6
 000 rpm
(200 kW/6  000 rpm)Maximum torque 
acc. to SAE J 1349258 lb-ft/
2  400 - 5  000 rpm
(350 Nm/
2  400 - 5  000 rpm)Maximum engine 
speed6  500 rpmFiring order1-4-3-6-2-5Poly-V-belt2  404 mmElectrical system GLK 350Alternator14 V/150 AStarter motor12 V/1.4 kWElectrical system GLK 350Battery12 V/70 AhSpark plugs, typeBosch J 7 MPP33Spark plugs, 
electrode gap0.031 in (0.8 mm)Spark plugs, 
tightening torque15 - 18 lb-ft
(20 - 25 Nm)Main dimensions GLK 350Overall vehicle 
length178.3 in (4  528 mm)179.4 in
(4  556 mm) 15Overall vehicle 
width 1679.4 in (2
 016 mm)Overall vehicle 
height66.9 in (1  698 mm)66.4 in (1  686 mm) 15Wheelbase108.5 in (2
 755 mm)Track, front61.7 in (1  568 mm)Track, rear62.5 in (1  589 mm)Ground clearance7.9 in (201 mm) 17Turning circle37.7 ft (11.5 m)Weights GLK 350Roof loadmax. 165 lb (75 kg)
Vehicle specification GLK 350 
4MATIC (204.987)
The quoted data apply only to the standard
vehicle. Contact an authorized Mercedes-
14 Premium fuel required. Performance may vary with fuel octane rating.
15 Vehicles with AMG Sport Package.
16 Exterior rear view mirrors folded out.
17 Operational vehicle (vehicle with driver, all liquids, and full fuel tank).330Vehicle specification GLK 350 4MATIC (204.987)Technical data
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Benz Center for the corresponding data of all
special bodies and special equipment.Engine GLK 350 4MATICEngine, type272Mode of operation4-stroke engine,
gasoline injectionNo. of cylinders6Bore3.66 in (92.90 mm)Stroke3.39 in (86.00 mm)Total piston 
displacement213.5 cu in
(3  498 cm 3
)Compression 
ratio10.7:1Output acc. to 
SAE J 1349 18268 hp/6
 000 rpm
(200 kW/6  000 rpm)Maximum torque 
acc. to SAE J 1349258 lb-ft/
2  400 - 5  000 rpm
(350 Nm/
2  400 - 5  000 rpm)Maximum engine 
speed6  500 rpmFiring order1-4-3-6-2-5Poly-V-belt2  404 mmElectrical system GLK 350 4MATICAlternator14 V/150 AStarter motor12 V/1.4 kWBattery12 V/70 AhSpark plugs, typeBosch J 7 MPP33Electrical system GLK 350 4MATICSpark plugs, 
electrode gap0.031 in (0.8 mm)Spark plugs, 
tightening torque15 - 18 lb-ft
(20 - 25 Nm)Main dimensions GLK 350 4MATICOverall vehicle 
length178.3 in (4  528 mm)179.4 in
(4  556 mm) 19Overall vehicle 
width 2079.4 in (2
 016 mm)Overall vehicle 
height66.9 in (1  698 mm)66.4 in (1  686 mm) 19Wheelbase108.5 in (2
 755 mm)Track, front61.7 in (1  568 mm)Track, rear62.5 in (1  589 mm)Ground clearance7.9 in (201 mm) 21Turning circle37.7 ft (11.5 m)Weights GLK 350 4MATICRoof loadmax. 165 lb (75 kg)
Rims and tires
Notes
!  Only use tires which have been tested and
approved by Mercedes-Benz. Tires
approved by Mercedes-Benz are developed
to provide best possible performance in
conjunction with the driving safety systems
on your vehicle such as the ABS or the
18 Premium fuel required. Performance may vary with fuel octane rating.
19 Vehicles with AMG Sport Package.
20 Exterior rear view mirrors folded out.
21 Operational vehicle (vehicle with driver, all liquids, and full fuel tank).Rims and tires331Technical dataX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 331Z