2008 MERCEDES-BENZ CLS63AMG spare wheel

394 Practical hints
Where will I find...?
Collapsible tire (CLS 63 AMG only)
1Vehicle tool kit
2Collapsible tire
3Electric air pump
4Storage well casingRemoving the collapsible tire
Remove storage well casing that con-
tains the vehicle tool kit and the elec-
tric air pump.
1Collapsible tire
2Tensioning strap
(vehicles with 19" collapsible tire only)
3Retaining screw
4Storage well casing base
5Tensioning strap
(vehicles with 19" collapsible tire only)
Remove storage well casing base4.
Remove retaining screw3 by turning
it counterclockwise.
Remove collapsible tire1.
Storing the collapsible tire after use
If you wish to store the collapsible tire after
use, carry out the following steps. Other-
wise, the collapsible tire may not fit the
spare wheel well.
Unscrew the valve cap from the valve
of the collapsible tire.
Take the valve extractor from the
vehicle tool kit (
page 395).
Unscrew the valve insert from the valve
and allow the air to escape.
Screw the valve insert back into the
valve.
Screw the valve cap back onto the
valve.
!Make sure the collapsible tire is dry before
storing it.
iIt may take a few minutes for the collapsible
tire to deflate completely.

395 Practical hints
Where will I find...?
Store the collapsible tire by carrying
out the steps described in “Removing
the collapsible tire” (
page 394) in re-
verse order.
Compressing the collapsible tire
(CLS 63 AMG with Performance Pack-
age* only)
The 19" collapsible tire must be com-
pressed with two tensioning straps before
you can store it back in the trunk.
Extend the tensioning strap by pulling
the slider.
Place tensioning strap around spare
wheel rim and collapsible tire with the
buckle facing the inside of the rim.
Close the buckle.
Pull the loose end of the tensioning
strap.
The tensioning strap must be pulled as
tight as possible.
Vehicle tool kit
The vehicle tool kit is stored in the com-
partment underneath the trunk floor
(
page 393).
The vehicle tool kit includes:

Pair of universal pliers

Towing eye bolt

Wheel wrench

Alignment bolt

Collapsible wheel chock
iVehicles with 19" collapsible tire only: Be-
fore storing the collapsible tire in trunk fasten
tensioning straps, see “Compressing the col-
lapsible tire (CLS 63 AMG with Performance
Package* only)” (
page 395).
!Always lower trunk floor before closing the
trunk.
iThe electrical air pump is located in the stor-
age well casing (
page 394).
iThe tensioning straps are shown in red for
illustration purposes. The tensioning straps on
the spare wheel of your vehicle are black.

412 Practical hints
Flat tire
Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flashers.
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake.
Move the gear selector lever toP.
Turn off the engine (page 60).
Have any passenger exit the vehicle at
a safe distance from the roadway.
Vehicles with SmartKey: Remove the
SmartKey from the starter switch.
Vehicles with KEYLESS-GO*: Open the
driver’s door (this puts the starter
switch in position 0, same as with the
SmartKey removed from the starter
switch). The driver’s door then can be
closed again.
Mounting the spare wheel
iOpen door only when conditions are safe to
do so.
Warning!G
The dimensions of the spare wheel
(Minispare or collapsible tire) are different
from those of the road wheels. As a result,
the vehicle handling characteristics change
when driving with a spare wheel mounted.
Adapt your driving style accordingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted,
ensure proper tire pressure and do not ex-
ceed a vehicle speed of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.
Do not switch off the ESP
® when a Minis-
pare or collapsible tire is mounted.

413 Practical hints
Flat tire
Preparing the vehicle
Prepare the vehicle as described under
“Preparing the vehicle” on this page.
Take the spare wheel out of the trunk
(
page 393).
Take the wheel wrench and the jack
out of the trunk (
page 393).
Removing tensioning straps
(CLS 63 AMG with Performance Pack-
age* only)
A 19" spare wheel has two tensioning
straps on it that must both be removed be-
fore mounting the spare wheel.1Buckle
2Clip
Press on both clips2 simultaneously
to release buckle1.Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizeable objects.
When changing wheel on a level surface:
Place the wheel chock in front of and
another 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 cir-
cumstances require you to do so on a hill,
place the wheel chock and the other size-
able object as follows:
Place the wheel chock and another
sizeable object on the downhill side
blocking both wheels of the axle not
being worked on.iThe tensioning straps are shown in red for
illustration purposes. The tensioning straps on
the spare wheel of your vehicle are black.
iKeep the tensioning straps in a safe place.
You will need them to store the spare wheel in
the trunk after use (
page 394).

415 Practical hints
Flat tire
Jack up the vehicle until the wheel is a
maximum of 1.2 in (3 cm) from the
ground. Never start engine while
vehicle is raised.Removing the wheel
1Alignment bolt
Unscrew the upper-most wheel bolt
and remove.
Replace this wheel bolt with alignment
bolt1 supplied in the tool kit.
Remove the remaining bolts.
Remove the wheel.Mounting the spare wheel
Clean contact surfaces of wheel and
wheel hub.
Guide the spare wheel onto the align-
ment bolt and push it on.
Insert wheel bolts and tighten them
slightly.
Warning!G
The jack is intended only for lifting the
vehicle briefly for wheel changes. It is not
suited for performing maintenance work
under the vehicle.

Never start the engine when the vehicle
is raised.

Never lie down under the raised vehicle.
!Do not place wheel bolts in sand or dirt. This
could result in damage to the bolt and wheel hub
threads.
Warning!G
Vehicles with collapsible tire:
Inflate collapsible tire only after the wheel is
properly mounted.
Inflate the collapsible tire using the electric
pump (
page 416) before lowering the
vehicle.
!To avoid paint damage, place wheel flat
against hub and hold it there while installing first
wheel bolt.

416 Practical hints
Flat tire
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.
Vehicles with Minispare wheel:
Continue the procedure by following
the instructions under “Lowering the
vehicle” (
page 418).
Vehicles with collapsible tire:
Continue the procedure by following
the instructions under “Inflating the
collapsible tire” and then “Lowering the
vehicle” (
page 418).Inflating the collapsible tire
Take the electric air pump out of the
trunk (
page 393).
Warning!G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident. Be
sure to use the correct wheel bolts.
Warning!G
Only use genuine Mercedes-Benz wheel
bolts. Other wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.
!Do not lower the vehicle before inflating the
collapsible tire. Otherwise the rim may be dam-
aged.
Warning!G
Observe instructions on air pump label.

418 Practical hints
Flat tire
Detach the electric air pump.
Stow electrical plug3 and air hose4
behind flap1 and place the air pump
back in the trunk.Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.
Remove the jack.
1-5 Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of 96 lb-ft
(130 Nm).
Before storing the jack in the trunk, it
should be fully collapsed.
Warning!G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout)
because they are more likely to become
punctured or damaged by road debris,
potholes, etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
iVehicles with Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor (
page 309) until a full size wheel/tire with
functioning sensor has been placed back into
service on the vehicle.
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
96 lb-ft (130 Nm).
iWrap the damaged wheel in the protective
film that comes with the spare wheel and put the
wheel in the trunk.
You can also place the damaged wheel down into
the spare wheel well. In this case, you must stow
the luggage bowl in the trunk.


445 Technical data
Rims and tires
Spare wheel
ModelCLS 550
CLS 550 (AMG Sport Package*)CLS 63 AMGCLS 63 AMG
(Performance Package*)
Rim4.0Bx17H26.0 B x 18 H26.5 B x 19 H2
Wheel offset1.34 in (34 mm)0.98 in (25 mm)0.55 in (14 mm)
Minispare tire1
1Must not be used with snow chains.
T 155/70 R17 110M – –
Collapsible tire1 –175/55-18 95P175/50-19 97P
!Please compare the recommended tire in-
flation pressure for your vehicle with the tire in-
flation pressure on the yellow label located on
the spare wheel rim.
If the tire inflation pressure on the yellow label
on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the spare
wheel tire to the recommended tire inflation
pressure given on the yellow label on the spare
wheel rim.iPlease note that the tire inflation pressure of
the Minispare tire and the collapsible tire differs
from the tire inflation pressure of the road tires.
Make sure the Minispare tire is inflated to ap-
proximately 61 psi (4.2 bar).
Inflate the collapsible tire to approximately
51 psi (3.5 bar).