Page 360 of 378

Observe the notes on recommended tire
pressures under various operating
conditions (Y
page 331).
Check tire pressures regularly, and only
when the tires are cold. Comply with the
maintenance recommendations of the tire
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 size 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
GLK 250 BlueTEC, GLK 350
17
,
GLK 350 4MATIC 17 i
Not all wheel and tire combinations are
available at the factory for all countries.
17 BlueEFFICIENCY 358
Wheel and tire combinationsWheels and tires
Page 361 of 378

Tires
Summer tires Allo
ywheels V1
FA
RA
235/50 R 19 99 V
18
255/45 R 19 100 V 18, 19 7.5 J x 19 H2
Wheel offset: 1.85 in (47 mm)
8.5 J x 19 H2
Wheel offset: 2.05 in (52 mm) 001B
All-weather tires Alloy wheels V1
BA
235/60 R17 102 H M+S
18 7.5 J x 17 H2
Wheel offset: 1.87 in (47.5 mm) 001B
BA
235/50 R19 99 H M+S
18 7.5 J x 19 H2
Wheel offset: 1.85 in (47 mm) 001B
BA 235/50 R19 99 H M+S
MOExtended
20 7.5 J x 19 H2
Wheel offset: 1.85 in (47 mm) 001B
BA
235/45 R20 100 H XL M+S
18 8.0 J x 20 H2
Wheel offset: 1.77 in (45 mm) 001B
All-terrain tires Alloy wheels V1
BA
235/60 R17 102 H M+S
18 7.5 J x 17 H2
Wheel offset: 1.87 in (47.5 mm) 001B
Winter tires Alloy wheels V1
BA
235/60 R17 102 H M+S
000218 7.5 J x 17 H2
Wheel offset: 1.87 in (47.5 mm) 001B
Emergency spare wheel
Important safety notes
G
WARNING
The wheel or tire size as well as the tire type
of the spare wheel or emergency spare wheel
and the wheel to be replaced may differ.
Mounting an emergency spare wheel may severely impair the driving characteristics.
There is a risk of an accident.
To avoid hazardous situations:
R
adapt you rdriving style accordingly and
drive carefully.
R never mount more than one spare wheel or
emergency spare wheel that differs in size.
18 USA: not for GLK 250 BlueTEC.
19 Use of snow chains is not permitted .Observe the notes in the "Snow chains" section.
20 MOExtended tires (tires featuring run-flat characteristics) only in combination with an activated tire pressure
loss warning system. Emergency spare wheel
359Wheels and tires
Z
Page 362 of 378

R
only use a spare wheel or emergency spare
wheel of a different size briefly.
R do not switch ESP ®
off.
R have a spare wheel or emergency spare
wheel of a different size replaced at the
nearest qualified specialist workshop.
Observe that the wheel and tire dimensions
as well as the tire type must be correct.
When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 50 mph
(80 km/h).
Snow chains must not be mounted on
emergency spare wheels. General notes
You should regularly check the pressure of
the emergency spare wheel, particularly prior
to long trips, and correc tthe pressure as
necessary (Y page 331). The applicable value
is found on the wheel or under "Technical
data" (Y page 357).
i When you are driving with the collapsible
spare wheel mounted, the tire pressure
loss warning system or the tire pressure
monitor cannot function reliably. Only
restart the tire pressure loss warning
system/the tire pressure monitor when the
damaged wheel has been replaced with a
new wheel.
Vehicles with tire pressurem onitor:
after mounting an emergency spare wheel,
the system may still display the tire
pressure of the removed wheel for a few
minutes .The value displayed for the
mounted emergency spare wheel is not the
same as the current tire pressure of the
emergency spare wheel.
An emergency spare wheel may also be
mounted 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 tires after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel. Collapsible spare wheel
Removing the collapsible emergency
spare wheel The collapsible spare wheel can be found in
the stowage well under the cargo
compartment floor.
X
Lift the cargo compartment floor up
(Y page 277). X
Remove stowage compartment 0002.
X Turn retaining screw 0003counter-clockwise
and remove it.
X Remove collapsible spare wheel 0021.
X Take the wheel bolts for the collapsible
spare wheel from the vehicle tool kit.
For further information on changing a wheel
and mounting the spare wheel, see
(Y page 312).
Inflating the collapsible spare wheel !
Inflate the collapsible spare wheel using
the tire inflation compressor before
lowering the vehicle. The wheel rim could
otherwise be damaged. 360
Emergency spare wheelWheels and tires
Page 363 of 378

X
Pull connector 0020and the air hose out of
the housing.
X Remove the cap from the valve on the
collapsible spare wheel.
X Screw union nut 0002on the air hose onto the
valve.
X Make sure on/of fswitch 001Eof the tire
inflatio ncompressor is set to 0.
X Insert plug 0020into the socket of the
cigarette lighter (Y page 280) or into a 12 V
power socket (Y page 280) in your vehicle.
X Make sure that the SmartKey is in position
1(Y page 141) in the ignition lock.
X Press on/offs witch001Eon the tire inflation
compressor to I.
The tire inflatio ncompressor is switched
on. The tire is inflated. The tire pressure is
shown on pressure gauge 0021.
! Do not operate the tire inflation
compressor for longer than eight minutes
at a time without a break. It may otherwise
overheat.
The tire inflation compressor can be
operated again once it has cooled down.
X Inflate the tire to the specified tire
pressure.
The specified tire pressure is printed on the
yellow label of the emergency spare wheel.
X When the specified tire pressure has been
reached, press on/offs witch001Eon the
electric air pump to 0.
The tire inflatio ncompressor is switched
off. X
Turn the SmartKey to position 0in the
ignition lock.
X If the tire pressure is higher than the
specified pressure, press pressure release
button 0003until the correc ttire pressure has
been reached.
X Unscrew union nut 0002on the air hose from
the valve.
X Screw the cap onto the valve of the
collapsible spare wheel again.
X Stow plug 0020and the air hose in the lower
section of the blower housing.
X Stow the tire inflation compressor in the
vehicle.
Stowing aused collapsible spare wheel Take the following steps to stow a used
collapsible spare wheel. Otherwise, the
collapsible spare wheel will not fit in the spare
wheel well. Mercedes-Benz recommends that
you have this work carried out at a qualified
specialist workshop.
!
Only place the collapsible spare wheel in
the vehicle when it is dry. Otherwise,
moisture may get into the vehicle.
X Remove the valve extractor from the
vehicle tool kit.
X Unscrew the valve cap from the valve.
X Unscrew the valve insert from the valve and
release the air.
i Fully deflating the tires can take a few
minutes.
X Screw the valve insert back into the valve.
X Screw the valve cap back on.
X Place the valve extractor back into the
vehicle tool kit.
X Stow the collapsible spare wheel in the
emergency spare wheel well under the
cargo compartment and fasten in place. Emergency spare wheel
361Wheels and tires Z
Page 364 of 378
Technical data
Collapsible spare wheel
Tires Wheels V1
185/7
5 – 17 98 P
Tire pressure : 280 kPa (2.8 bar/41 psi) 6.0 B x 17 H2 ET 25 001B
i
The specified tire pressure is printed in yellow on the emergency spare wheel. 362
Emergenc
yspare wheelWheels and tires
Page 375 of 378

Refrigerant instruction label
Example: refrigerant instruction label
0002
Warning symbol
0003 Refrigerant filling capacity
0021 Applicable SAE standards
0020 PAG oil part number
001E Type of refrigerant
Warning symbols 0002indicate:
R possible dangers
R that it is necessary to have maintenance
work carried ou tataqualified specialist
workshop
Filling capacities All models Capacity
Refrigerant
660 ± 10 g
(23.3 ± 0.4 oz) PAG oil
110 g
(3.9 oz) Vehicle data
General notes
Please note that for the specified vehicle
data:
R the heights specified may vary as a result
of:
-tires
- load
- condition of the suspension
- optional equipment
R the indicated ground clearance refers to
the vehicle when loaded and ready to drive,
including:
-driver (68 kg)
- all fluids (fuel tank 100% full) Dimensions and weights
Model 0002
Opening
height 0003
Max.
headroom GLK 250
BlueTEC
4MATIC
82.2 in
(2087 mm) 77.0 in
(1955 mm) All other
models
82.1 in
(2086 mm) 76.9 in
(1954 mm) Vehicle data
373Technical data Z