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 00CD in
(1.6 mm) has been reached. Occupant distribution
The distribution of occupants in a vehicle at
their designated seating positions. Total load limit
Nominal load and luggage load plus 68 kg
(150 lbs)
multiplied by
the number of seats in
the vehicle. Changing a wheel
Flat tire
You can find
information on
what to do in the
event of a flat tire in the "Flat tire" section
(Y page 312).
Information on driving with MOExtended tires
in the event of a flat tire can be found under
"MOExtended tires (tires with run-flat
characteristics" (Y page 313). Rotating the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics 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.
! 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.
Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 353).
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 no
warranty book is available, the tires should be
rotated every 3,000 to 6,000 miles (5,000 to
10,000 km), or earlier if tire wear requires. Do
not change the direction of wheel rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressures.
Information on changing tires and mounting
the spare wheel ( Y page 352). 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. 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. 352
Changing a wheel
Wheels and tires
Cleaning the wheels
G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior
damage
to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately. Mounting a wheel
Preparing the vehicle
X Stop the vehicle on solid, non-slippery and
level ground.
X Apply the parking brake.
X Bring the front wheels into the straight-
ahead position.
X Secure the vehicle against rolling away
(Y page 160).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 141).
X If included in the vehicle equipment,
remove the tire-change tool kit from the
vehicle.
X Secure the vehicle to prevent it from rolling
away. Securing the vehicle to prevent it
from rolling away
If your vehicle is equipped with a wheel chock,
it can be found in the tire-change tool kit
(Y page 312).
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away, for example when changing a
wheel.
X
Fold both plates upwards 0043.
X Fold out lower plate 0044.
X Guide the lugs on the lower plate fully into
the openings in base plate 0087. Securing the vehicle on level ground
X
On level ground: place chocks or other
suitable items under the front and rear of
the wheel that is diagonally opposite the
wheel you wish to change. Mounting a wheel
353
Wheels and tires Z
Securing the vehicle on slight downhill gradients
X
On light downhill gradients: place
chocks or other suitable items in front of
the wheels of the front and rear axle. Raising the vehicle
G
WARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate
jacking point of the vehicle. The base of the
jack must be positioned vertically, directly
under the jacking point of the vehicle.
The following must be observed
when raising
the vehicle:
R to raise the vehicle, only use the vehicle-
specific jack that has been tested and
approved by Mercedes-Benz. If used
incorrectly, the jack could tip over with the
vehicle raised.
R the jack is designed only to raise and hold
the vehicle for a short time while a wheel
is being changed. It is not suited for
performing maintenance work under the
vehicle.
R avoid changing the wheel on uphill and
downhill slopes.
R before raising the vehicle, secure it from
rolling away by applying the parking brake
and inserting wheel chocks. Never disengage the parking brake while the
vehicle is raised.
R the jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a
large, load-bearing underlay
must be
used.
On a slippery surface, a non-slip underlay
must be used, e.g. rubber mats.
R do not use wooden blocks or similar
objects as a jack underlay. Otherwise, the
jack will not be able to achieve its load-
bearing capacity due to the restricted
height.
R make sure that the distance between the
underside of the tires and the ground does
not exceed 1.2 inches (3 cm).
R never place your hands and feet under the
raised vehicle.
R never lie under the raised vehicle.
R never start the engine when the vehicle is
raised.
R never open or close a door or the tailgate
when the vehicle is raised.
R make sure that no persons are present in
the vehicle when the vehicle is raised.
! The jack is designed exclusively for
jacking up the vehicle at the jacking points.
Otherwise, your vehicle could be damaged. 354
Mounting a wheel
Wheels and tires
X
Using lug wrench 0043, loosen the bolts on
the wheel you wish to
change by about one
full turn. Do not unscrew the bolts
completely. The jacking points are located just behind the
wheel housings of the front wheels and just
in front of the wheel housings of the rear
wheels (arrows).
X
Take the ratchet wrench out of the vehicle
tool kit and place it on the hexagon nut of
the jack so that the
letters AUF are visible. X
Position jack 0087 at jacking point 0044. X
Turn ratchet wrench 0085 until jack 0087 sits
completely on jacking point 0044 and the
base of the jack lies evenly on the ground.
X Turn ratchet wrench 0085 until the tire is
raised a maximum of 1.2
in (3 cm) from the
ground. Removing a wheel
! Do not place wheel bolts in sand or on a
dirty surface. The bolt and wheel hub
threads could otherwise be damaged
when
you screw them in.
X Unscrew the wheel bolts.
X Remove the wheel. Mounting a new wheel
G
WARNING
Oiled or greased wheel bolts or damaged
wheel bolts/hub threads can cause
the wheel Mounting a wheel
355
Wheels and tires
Z
bolts to come loose. As a result, you could
lose a wheel while driving. There is a risk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the
threads,
contact a qualified
specialist workshop immediately. Have the
damaged wheel bolts or hub threads
replaced/renewed. Do not continue driving. G
WARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
Always pay attention to the instructions and
safety notes in the "Changing a wheel"
section ( Y page 352).
Only use wheel bolts that
have been designed
for the wheel and the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel. 0043
Wheel bolts for all wheels supplied by the
factory
0044 Wheel bolts for the collapsible spare
wheel
! Always use wheel bolts 0044 to mount the
collapsible spare wheel. Using other
wheel
bolts to mount the collapsible spare wheel
could damage the brake system. Be sure to use the original-length wheel bolts
when re-mounting the original wheel after it
has been repaired.
!
To prevent damage to
the
paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt. X
Clean the wheel and wheel hub contact
surfaces.
X Place the new wheel on the wheel hub and
push it on.
X Tighten the wheel bolts until they are
finger-tight.
X Inflate the collapsible spare wheel
(Y page 360).
Only then lower the vehicle. Lowering the vehicle
G
WARNING
The wheels could work loose if the wheel nuts
and bolts are not tightened to the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed.
! Inflate the collapsible spare wheel using
the tire inflation compressor before
lowering the vehicle. The wheel rim could
otherwise be damaged. 356
Mounting a wheel
Wheels and tires
Tires
Summer tires Alloy wheels 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) 003B
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) 003B
BA
235/50 R19 99 H M+S
18 7.5 J x 19 H2
Wheel offset: 1.85 in (47 mm) 003B
BA 235/50 R19 99 H M+S
MOExtended
20 7.5 J x 19 H2
Wheel offset: 1.85 in (47 mm) 003B
BA
235/45 R20 100 H XL M+S
18 8.0 J x 20 H2
Wheel offset: 1.77 in (45 mm) 003B
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) 003B
Winter tires Alloy wheels V1
BA
235/60 R17 102 H M+S
004D18 7.5 J x 17 H2
Wheel offset: 1.87 in (47.5 mm) 003B
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 your driving 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
359
Wheels and tires
Z
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 correct the 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 pressure monitor:
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 0043.
X Turn retaining screw 0044 counter-clockwise
and remove it.
X Remove collapsible spare wheel 0087.
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 wheel
Wheels and tires
Example: vehicle identification plate (USA only)
Example: vehicle identification plate (Canada only)
0044
Paint code
0087 VIN
i The data shown on
the
identification plate
is example data. This data is different for
every vehicle and can deviate from the data
shown here. You can find the data
applicable to your vehicle on the vehicle
identification plate. VIN X
Slide the right-hand front seat to its
rearmost position.
X Fold floor covering 0043 upwards.
You will see VIN 0044.
The VIN can also be found in the following
locations:
R on the lower edge of the windshield
(Y page 365)
R on the vehicle identification plate
(Y page 364) Engine number
0043
Emission control information plate,
including the certification of both federal
and Californian emissions standards
0044 Engine number (stamped into the
crankcase)
0087 VIN (on the lower edge of the windshield) Service products and filling
capacities
Important safety notes
G
WARNING
Service products may be poisonous and
hazardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products
on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children. Service products and filling capacities
365
Technical data Z