X
Unscrew the uppermost wheel bolt com-
pletely.
X Screw alignment bolt :into the thread
instead of the wheel bolt.
X Unscrew the remaining wheel bolts fully.
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 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 ofdamage 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" sec-
tion (Y page 367).
Only use wheel bolts that have been designed for the wheel and the vehicle. For safety rea-
sons, Mercedes-Benz recommends that you
only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
! AMG vehicle with ceramic brake discs:
during removal and repositioning of the
wheel, the wheel rim can strike the
ceramic-brake disc and damage it. There-
fore, take precautions and have a second
person assist you. Alternatively, you can
use a second alignment bolt. !
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 Slide the wheel to be mounted onto the
alignment bolt and push it on.
X Tighten the wheel bolts until they are fin-
ger-tight.
X Unscrew the alignment bolt.
X Tighten the last wheel bolt until it is finger-
tight.
X Vehicles with a collapsible spare wheel:
inflate the collapsible spare wheel
(Y page 381).
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.
! Vehicles with a collapsible spare
wheel: before lowering the vehicle, inflate
the collapsible spare wheel with the tire
inflation compressor. The wheel rim could
otherwise be damaged. Changing a wheel
371Wheels and tires Z
Winter tires
R19
Tires Alloy wheels
FA: 255/35 R19 96 V XL M+S
i4
RA: 255/35 R19 96 V XL M+Si 4, 5 FA: 9.0 J x 19 H2
Wheel offset: 1.46 in (37 mm)
RA: 9.5 J x 19 H2
Wheel offset: 2.05 in (52 mm)
FA: 255/35 R19 96 V XL M+S
i4
RA: 285/30 R19 98 V XL M+S i3, 4 FA: 9.0 J x 19 H2
Wheel offset: 1.46 in (37 mm)
RA: 10.0 J x 19 H2
Wheel offset: 1.85 in (47 mm)
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.
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 emer-
gency 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 nec-
essary (Y page 348). The value on the wheel is
valid. In addition, the emergency spare wheel
tire pressure can be found under "Technical
data" (Y page 382).
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 emer-
gency spare wheel.
Replace the tires after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
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 sys-
4 Observe the notes on "Large wheels" under "General notes" in "Wheel/tire combinations".
5 Only fine-link snow chains are permitted.
3 Use of snow chains not permitted. Observe the notes in the "Snow chains" section. Emergency spare wheel
379Wheels and tires Z
tem/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 emer-
gency spare wheel is not the same as the
current tire pressure of the emergency
spare wheel. "Minispare" emergency spare wheel/
collapsible spare wheel
Removing the "Minispare" emergency
spare wheel The emergency spare wheel can be found in
the stowage well under the trunk floor.
X Lift the trunk floor upwards (Y page 292).
X Turn stowage well ;counter-clockwise
and remove it together with vehicle tool kit
tray :.
X Remove "Minispare" emergency spare
wheel =. Removing the collapsible spare wheel
(AMG vehicles) The emergency spare wheel can be found in
the stowage well under the trunk floor.
X Lift the trunk floor upwards (Y page 292).
X Reach into cutout :in the tool holder and
lift it up.
X Remove collapsible spare wheel ;.
Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 368). Stowing a used collapsible spare
wheel
! Only place the collapsible spare wheel in
the vehicle when it is dry. Otherwise, mois-
ture may get into the vehicle.
Take the following steps to stow a used col-
lapsible spare wheel. It will not otherwise fit
into the spare wheel well. Mercedes-Benz
recommends that you have this work per-
formed at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center.
X Unscrew the valve cap from the valve.
X Use the back of the valve cap to 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. 380
Emergency spare
wheelWheels and tires
X
Remove the protective sheet from the vehi-
cle tool kit and pull it over the collapsible
spare wheel.
X Stow the collapsible spare wheel in the
emergency spare wheel well under the
trunk. Inflating the collapsible spare wheel
! Inflate the collapsible spare wheel using
the tire inflation compressor before lower-
ing the vehicle. The wheel rim could other-
wise be damaged.
! Do not operate the tire inflation compres-
sor for longer than eight minutes at a time
without a break. It may otherwise overheat.
The tire inflation compressor can be oper-
ated again once it has cooled down. X
Mount the collapsible spare wheel as
described (Y page 368).
The collapsible spare wheel must be moun-
ted before it is inflated.
X Pull connector ?and the hose out of the
housing.
X Remove the cap from the valve on the col-
lapsible spare wheel.
X Screw union nut :of the hose onto the
valve.
X Make sure on/off switch Aof the tire
inflation compressor is set to 0.
X Insert connector ?into a 12 V socket
(Y page 298) in your vehicle. X
Turn the SmartKey to position 1in the igni-
tion lock (Y page 149).
X Press on/off switch Aon the tire inflation
compressor to I.
The tire inflation compressor is switched
on. The tire is inflated. The tire pressure is
shown on pressure gauge =.
X Inflate the tire to the specified tire pres-
sure.
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/off switch Aon the
electric air pump to 0.
The tire inflation compressor is switched
off.
X Turn the SmartKey to position 0in the igni-
tion lock.
X If the tire pressure is higher than the speci-
fied pressure, press pressure release valve
button ;until the correct tire pressure has
been reached.
X Unscrew air hose union nut :from the
valve.
X Screw the cap onto the valve of the col-
lapsible spare wheel again.
X Stow connector ?and the hose in the
lower section of the tire inflation compres-
sor.
X Stow the tire inflation compressor in the
vehicle. Emergency spare wheel
381Wheels andtires Z
Technical data
All vehicles (except AMG vehicles) "Minispare" emergency spare wheel
Tires Alloy wheels
T 155/6
0 R18 107 M
Tire pressure : 420 kPa (4.2 bar/61 psi) 4.5 B x 18 H2
Wheel offset: 1.42 in (36 mm)
AMG vehicles
Collapsible spare wheel
Tires Alloy wheels
175/50 – 19 97 P
Tire pressure: 350 kPa (3.5 bar/51 psi) 6.5 B x 19 H2
Wheel offset: 0.55 in (14 mm)382
Emergency spare wheelWheels and tires