wheel size MERCEDES-BENZ G55AMG 2008 W463 Owner's Manual

Contents
Technical data.................................. 407
Parts service ...................................... 408
Warranty coverage ............................. 409 Loss of Service and Warranty
Information Booklet...................... 409
Identification labels............................ 410
Layout of poly-V-belt drive ................. 412
G 500 ........................................... 412
G 55 AMG..................................... 412
Engine ................................................ 413
Rims and tires .................................... 414 Same size tires ............................. 415
Spare wheel ................................. 416
Electrical system.......... ...................... 417
Main dimensions, vehicle weights
and ratings ......................................... 418 Main dimensions .......................... 418
Vehicle weights and ratings ......... 419 Fuels, coolants, lubricants, etc. ......... 420
Capacities .................................... 420
Engine oils.................................... 423
Engine oil additives ...................... 423
Air conditioning refr igerant .......... 423
Brake fluid .................................... 423
Premium unleaded gasoline ......... 424
Fuel requirements ........................ 424
Gasoline additives ........................ 425
Coolants....................................... 425
Windshield/rear window washer
system and headlamp
cleaning system ........................... 428Index ................................................. 429
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42 Getting started
Adjusting
Seat adjustment
The seat adjustment switches are located
on the respective front door.1 Head restraint height
2 Seat backrest tilt
3 Seat fore and aft adjustment
4 Seat cushion tilt
5 Seat height
Switch on the ignition (page 39).
or
Open the respective front door.
Warning!G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. Thus, we strongly recommend
that children be placed in the rear seats
whenever possible. Regardless of seating
position, children 12 years old and under
must be seated and properly secured in an
appropriately sized infant restraint, toddler
restraint, or booster seat recommended for
the size and weight of the child. For addi-
tional information, see “Children in the vehi-
cle” (
page 77).
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle
and/or the child is no t properly secured in
the child restraint.
!When moving the seat, make sure

there are no items in the footwell or behind
the seat

the cup holder next to the armrest is
removed (
page 219)

the cup holder in the front passenger
footwell is folded closed (
page 220)
Otherwise you could damage the seat and/or
cup holders.
iThe memory function (page 114) lets you
store the setting for the seat position together
with the settings for the steering wheel and the
exterior rear view mirrors.
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71
Safety and Security
Occupant safety

Adjust the driver’s seat as far as possi-
ble rearward, still permitting proper
operation of vehicle controls. The
distance from the center of the driver’s
breastbone to the center of the air bag
cover on the steering
wheel must be at
least 10 inches (25 cm) or more. You
should be able to accomplish this by a
combination of adjustments to the seat
and steering wheel. If you have any
problems, please see an authorized
Mercedes-Benz Light Truck Center.

Do not lean with your head or chest
close to the steering wheel or dash-
board.

Keep hands on the outside of steering
wheel rim. Placing hands and arms
inside the rim can increase the risk and
potential severity of hand/arm injury
when driver’s front air bag inflates.

Adjust the front passenger seat as far as
possible rearward from the dashboard
when the seat is occupied.

Always sit as upright as possible, prop-
erly use the seat belts and appropriate
size infant or child restraint system.

Children 12 years old and under must
never ride in the front seat, except in a
Mercedes-Benz authorized
BabySmart
TM compatible child seat,
which operates with the BabySmartTM
system installed in the vehicle to deacti-
vate the passenger front air bag when it
is properly installed. Otherwise they will
be struck by the air bag when it inflates
in a crash. If this happens, serious or
fatal injury will result.
Failure to follow thes e instructions can
result in severe injuries to you or other
occupants.
If you sell your vehicle, it is important that
you make the buyer aware of this safety
information. Be sure to give the buyer this
Operator’s Manual.
Warning!G
Accident research shows that the safest
place for children in an automobile is in the
rear seat. Should yo u choose to place a
child 12 years old or under in the front pas-
senger seat of your vehicle, you must prop-
erly use a BabySmart
TM child restraint which
will turn off the passenger front air bag.
To help avoid the possib ility of injury, please
follow these guidelines:
(1) Always sit as upright as possible, prop- erly use the seat belts and use an appro-
priately sized infant or child restraint
system for all children 12 years old or
under.
(2) Always wear seat belts properly.
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92 Safety and Security
Driving safety systems
Warning!G
Never switch off the ESP® when you see the
ESP® warning lamp v flashing in the
instrument cluster. In this case proceed as
follows:

While driving off, apply as little throttle
as possible.

While driving ease up on the accelera-
tor.

Adapt your speed and driving style to
the prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP
® cannot prevent accidents result-
ing from excessive speed.
Warning!G
The ESP® cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The ESP
®
cannot prevent accidents, including those
resulting from excessiv e speed in turns, fol-
lowing another vehicle too closely, or hydro-
planing. Only a safe, attentive, and skillful
driver can prevent accidents. The capabili-
ties of a ESP
® equipped vehicle must never
be exploited in a reckless or dangerous
manner which could jeopardize the user’s
safety or the safety of others.
!Operational or performance test must only
be conducted on a two-axle dynamometer. If
such tests are necessary, contact an authorized
Mercedes-Benz Light Truck Center. You could
otherwise seriously damage the brake system or
the transfer case which is not covered by the
Mercedes-Benz Limited Warranty.
!Because the ESP® operates automatically,
the engine and ignition must be shut off when
testing the parking brake on a brake test
dynamometer and such testing should be no
longer than 10 seconds.
Active braking action through ESP
® may
otherwise seriously damage the brake system
which is not covered by the Mercedes-Benz
Limited Warranty.
iThe ESP® will only function properly if you
use wheels of the recommended tire size
(
page 414).
iThe ABS, BAS, and ESP® are automatically
switched off when the differential locks are
switched on (
page 175).
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208 Controls in detail
Loading
Loading instructions
Load distribution
The gross vehicle weight which is the
weight of the vehicle including fuel, tools,
spare wheel, installed accessories, pas-
sengers and luggage/cargo must never
exceed the load limit and Gross Vehicle
Weight Rating (GVWR) for your vehicle as
specified on the certification label located
on the driver’s door B-pillar (
page 410).
In addition, the load must be distributed in
such a way so that the weight on each axle
never exceeds the Gross Axle Weight
Rating (GAWR) for the front and rear axle.
The GVWR and GAWR for your vehicle are
indicated on the certification label which
can be found on the driver’s door B-pillar
(
page 410).
For more information, see “Tire and Load-
ing Information” (
page 281).
Warning!G
Always fasten items being carried as
securely as possible using cargo tie-down
rings and fastening materials appropriate
for the weight and size of the load.
In an accident, during hard braking or
sudden maneuvers, loose items will be
thrown around inside the vehicle, and can
cause injury to vehicl e occupants unless the
items are securely fastened in the vehicle.
To help avoid person al injury during a
collision or sudden maneuver, exercise care
when transporting cargo. Put luggage or
cargo in the cargo compartment if possible.
Do not pile luggage or cargo higher than the
seat backrests.
Never drive vehicle with the tailgate open.
Deadly carbon monoxide (CO) gases may
enter vehicle interior resulting in uncon-
sciousness and death.
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277
Operation
Tires and wheels
 Tires and wheels
Contact an authorized Mercedes-Benz
Light Truck Center for information on test-
ed and recommended rims and tires for
summer and winter operation. They can
also offer advice concerning tire service
and purchase.Important guidelines

Only use sets of tires and rims of the
same type and make.

Tires must be of the correct size for the
rim.

Break in new tires for approximately
60 miles (100 km) at moderate
speeds.

Regularly check the tires and rims for
damage. Dented or bent rims can
cause tire inflation pressure loss and
damage to the tire beads.

If vehicle is heavily loaded, check tire
inflation pressure and correct as
required.

Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths of less than
1/8in (3 mm).

When replacing individual tires, you
should mount new tires on the front
wheels first (on vehicles with
same-sized wheels all around).
Warning!G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the
original part. See an authorized
Mercedes-Benz Light Truck Center for fur-
ther information. If incorrectly sized rims
and tires are mounted:

The wheel brakes or suspension
components can be damaged.

The operating clearance of the wheels
and the tires may no longer be correct.
Warning!G
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
When replacing rims, only use genuine
Mercedes-Benz wheel bo lts specified for the
particular rim type. Failure to do so can
result in the bolts loos ening and possibly an
accident.
Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on
retreads. The operating safety of the vehicle
cannot be assured when such tires are used.
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280 Operation
Tires and wheels
Direction of rotation
Unidirectional tires offer added advan-
tages, such as better hydroplaning per-
formance. To benefit, however, you must
make sure the tires rotate in the direction
specified.
An arrow on the sidewall indicates the
intended direction of rotation (spinning) of
the tire.Loading the vehicle
Two labels on your vehicle show how much
weight it may properly carry.
1) The Tire and Loading Information placard can be found on the driver’s
door B-pillar. This placard tells you
important information about the
number of people that can be in the
vehicle and the total weight that can be
carried in the vehicle. It also contains
information on the proper size and
recommended tire inflation pressures
for the original equipment tires on your
vehicle.
2) The certification label, also found on the driver’s door B-pillar tells you about
the gross weight capacity of your vehi-
cle, called the Gross Vehicle Weight
Rating (GVWR). The GVWR includes the
weight of the vehicle, all occupants,
fuel and cargo. The certification label
also tells you about the front and rear
axle weight capacity, called the Gross
Axle Weight Rating (GAWR). The GAWR is the total allowable weight that can be
carried by a single axle (front or rear).
Never exceed the GVWR or GAWR for
either the front axle or rear axle.
1 Driver’s door B-pillar
Following is a discussion on how to work
with the information contained on the Tire
and Loading Information placard with
regards to loading your vehicle.
iSpare wheels may be mounted against the
direction of rotation (spinning) even with a
unidirectional tire for temporary use only until
the regular drive wheel has been repaired or
replaced. Always observe and follow applicable
temporary use restrictions and speed limitations
indicated on the spare wheel.
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283
Operation
Tires and wheels
Step 3
Subtract the combined weight of the
driver and passengers from
XXX kilograms or XXX lbs.
Step 4
The resulting figure equals the avail-
able amount of cargo and luggage load
capacity. For example, if the “XXX”
amount equals 1 400 lbs and there will
be five 150 lbs passengers in your
vehicle, the amount of available cargo
and luggage load capacity is 650 lbs
(1 400 - 750 (5 x 150) = 650 lbs). Step 5
Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weig
ht may not safely
exceed the available cargo and luggage
load capacity calculated in step 4.
Step 6 (if applicable)
If your vehicle will be towing a trailer,
load from your trailer will be trans-
ferred to your vehicle. Consult this
manual to determine how this reduces
the available cargo and luggage load
capacity of your vehicle (
page 285). The following table shows examples on
how to calculate total and cargo load
capacities with varying seating configura-
tions and number and size of occupants.
The following examples use a load limit
of 1 500 lbs.
This is for illustration
purposes only . Make sure you are using
the actual load limit fo r your vehicle stated
on the vehicle’s Tire and Loading
Information placard (
page 281).
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291
Operation
Tires and wheels
Warning!G
The Advanced TPMS does not indicate a
warning for wrongly selected inflation pres-
sures. Always adjust ti
re inflation pressure
according to the Tire and Loading Informa-
tion placard on the driver’s door B-pillar or,
if available, the supplemental tire inflation
pressure information on the inside of the
fuel filler flap.
The Advanced TPMS is not able to issue a
warning due to a sudden dramatic loss of
pressure (e.g. tire blowout caused by a for-
eign object). In this case bring the vehicle to
a halt by carefully applying the brakes and
avoiding abrupt steering maneuvers.
Warning!G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
Tire and Loading Information placard or the
tire inflation pressure label (if available). If
your vehicle has tires of a different size than
the size indicated on the Tire and Loading
Information placard or the tire inflation
pressure label (if av ailable), you should
determine the proper tire inflation pressure
for those tires.
As an added safety feature, your vehicle has
been equipped with an Advanced Tire Pres-
sure Monitoring System (Advanced TPMS)
that illuminates a low tire pressure telltale
when one or more of yo ur tires is significant-
ly underinflated. Acco rdingly, when the low
tire pressure telltale illuminates, you should
stop and check your tires as soon as possi-
ble, and inflate them to the proper pressure.
Driving on a significantly underinflated tire
causes the tire to over heat and can lead to
tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please
note that the Advanced TPMS is not a sub-
stitute for proper tire maintenance, and it is
the driver’s responsibility to maintain cor-
rect tire pressure, even if underinflation has
not reached the level to trigger illumination
of the Advanced TPMS low tire pressure tell-
tale.
USA only: Your vehicle has also been
equipped with a Advanced TPMS malfunc-
tion indicator to indica te when the system is
not operating properly. The Advanced TPMS
malfunction indicator is combined with the
low tire pressure telltale. When the system
detects a malfunction, the telltale will flash
for approximately 1 minute and then remain
continuously illuminate d. This sequence will
continue upon subsequent vehicle start-ups
as long as the malfunction exists.

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295
Operation
Tires and wheels
1
Uniform Quality Grading Standards
(
page 302)
2 DOT, Tire Identification Number (TIN)
(
page 299)
3 Maximum tire load (
page 300)
4 Maximum tire inflation pressure
(
page 301)
5 Manufacturer
6 Tire ply material (
page 304)
7 Tire size designation, load and speed
rating (
page 295)
8 Load identification (
page 298)
9 Tire name Tire size designation, load and speed
rating
1 Tire width
2 Aspect ratio in %
3 Radial tire code
4 Rim diameter
5 Tire load rating
6 Tire speed rating General:
Depending on the design standards used,
the tire size molded into the sidewall may
have no letter or a letter preceding the tire
size designation.
No letter preceding the size designation
(as illustrated above): Passenger car tire
based on European design standards.
Letter “P” preceding the size designation:
Passenger car tire based on U.S. design
standards.
Letter “LT” preceding the size designation:
Light Truck tire based on U.S. design
standards.
Letter “T” preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only.
iFor illustration purposes only. Actual data
on tires are specific to each vehicle and may vary
from data shown in above illustration.
For more information, see “Rims and tires”
(
page 414).
iFor illustration purposes only. Actual data
on tires are specific to each vehicle and may vary
from data shown in above illustration.
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