MERCEDES-BENZ R-Class 2011 W251 Owner's Manual

have been especially developed for driving
on snow.
An electronic speed limiter prevents your
vehicle from exceeding a speed of
130 mph (210 km/h).
The speed index of tires installed at the
factory may be higher than the maximum
speed that the electronic speed limiter
permits.
Make sure that your tires have the required
speed index as specified in the "Tires" section
( Y page 343) for your vehicle, e.g. when
buying new tires.
More information on reading the tire data can
be obtained at any qualified specialist
workshop, e.g. at an authorized Mercedes-
Benz Center.
Load identification
i Tire data is vehicle-specific and may
deviate from the data in the example.
In addition to the load bearing index, load
index : may be imprinted after the letters
that identify speed index B (Y page 337) on
the sidewall of the tire.
R If no specification is given: no text (as in the
example above), represents a standard
load (SL) tire
R XL or Extra Load: represents a reinforced
tire
R Light load: represents a light load tire
R C, D, E: represents a load range that
depends on the maximum load that the tire
can carry at a certain pressure
DOT, Tire Identification Number (TIN)
U.S. tire regulations prescribe that every new
tire manufacturer or retreader has to imprint
a TIN in or on the sidewall of each tire
produced.
The TIN is a unique identification number. The
TIN enables the tire manufacturers to inform
purchasers of recalls and other safety-
relevant matters. It makes it possible for the
purchaser to easily identify the affected tires.
The TIN is made up of manufacturer
identification code ;, tire size =, tire type
code ? and date of manufacture A.
i Tire data is vehicle-specific and may
deviate from the data in the example.
DOT (Department of Transportation): tire
symbol : marks that the tire complies with
the requirements of the U.S. Department of
Transportation.
Manufacturer identification code:
manufacturer identification code ; provides
details on the tire manufacturer. New tires
have a code with two symbols. Retreaded
tires have a code with four symbols.
Further information about retreaded tires
( Y page 320).
Tire size: identifier = describes the tire size.
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Tire type code: tire type code ? can be
used by the manufacturer as a code to
describe specific characteristics of the tire.
Date of manufacture: date of manufacture
A provides information about the age of a
tire. The first and second positions represent
the week of manufacture, starting with "01"
for the first calendar week. Positions three
and four represent the year of manufacture.
For example, a tire that is marked with
"3208", was manufactured in week 32 in
2008.
Characteristics of the tire
i Tire data is vehicle-specific and may
deviate from the data in the example.
This information describes the tire cord and
the number of layers in sidewall : and under
tire tread ;.
Definitions for tires and loading
Structure and condition of the tire
Describes the number of layers or the number
of rubber-coated belts in the tire tread and
the tire wall. These are made of steel, nylon,
polyester and other materials.
Bar
Metric unit for tire pressure. 14.5038 pounds
per square inch (psi) and 100 kilopascals
(kPa) are the equivalent of 1 bar.
DOT (Department of Transportation)
DOT marked tires fulfill the requirements of
the United States Department of
Transportation.
Average weight of the vehicle
occupants
The number of occupants for which the
vehicle is designed multiplied by 68 kilograms
(150 lb).
Uniform Tire Quality Grading
Standards
A uniform standard to grade the quality of
tires with regards to tread quality, tire traction
and temperature characteristics. The quality
grading assessment is made by the
manufacturer following specifications from
the U.S. government. The quality grade of a
tire is imprinted on the sidewall of the tire.
Recommended tire pressure
The recommended tire pressure for your
vehicle under normal driving conditions. You
will find the recommendation on the Tire and
Loading Information placard on the B-pillar on
the driver's side of your vehicle. The
recommended tire pressure provides the best
balance between handling characteristics,
ride comfort and wear. Additional information
on particular driving conditions is located on
the tire pressure table on the inside of the fuel
filler flap.
Increased vehicle weight due to
optional equipment
The combined weight of all standard and
optional equipment available for the vehicle,
regardless of whether it is actually installed
on the vehicle or not.
340Definitions for tires and loadingTires and wheels
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Wheel rim
The part of the wheel on which the tire is
mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum gross axle weight
rating. The actual load on an axle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicle identification plate on the B-pillar on
the driver's side.
Speed index
The speed index is part of the tire
identification. Specifies the speed range for
which the tire is approved.
GTW (Gross Trailer Weight)
The GTW is the weight of a trailer including
the weight of the load, luggage, accessories
etc. on the trailer.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight
of the vehicle including fuel, tools, the spare
wheel, accessories installed, occupants,
luggage and the drawbar noseweight if
applicable. The gross vehicle weight must not
exceed the gross vehicle weight rating GVWR
as specified on the vehicle identification plate
on the B-pillar on the driver's side.
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of a fully loaded vehicle (the weight of
the vehicle including all accessories,
occupants, fuel, luggage and the drawbar
noseweight if applicable). The gross vehicle
weight rating is specified on the vehicle
identification plate on the B-pillar on the
driver's side.
Maximum weight of the laden vehicle
The maximum weight is the sum of the
unladen weight of the vehicle, the weight of
the accessories, the maximum load and the
weight of the optional equipment installed at
the factory.
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa is the
equivalent of 1 psi. Another unit for tire
pressure is bar. 100 kilopascal (kPa) is the
equivalent of 1 bar.
Load index
In addition to the load bearing index, the load
index may also be imprinted on the sidewall
of the tire. This specifies the load bearing
capacity more precisely.
Unladen weight
The weight of a vehicle with standard
equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air-
conditioning system and optional equipment
if these are installed on the vehicle, but does
not include passengers or luggage.
Maximum tire load
The maximum tire load in kilograms or
pounds is the maximum weight for which a
tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire.
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Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two.
PSI (pounds per square inch)
Standard unit of measurement for tire
pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tire pressure
Pressure inside the tire applying an outward
force to every square inch of the tire's
surface. The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold. For this,
the vehicle must have been stationary for at
least three hours or not have traveled more
than 1.6 km (1 mile) in this time.
Tire tread
The part of the tire that comes into contact
with the road.
Tire bead
The tire bead contains steel wire which is
bound by steel cords that hold the tire on the
wheel rim.
Sidewall
The part of the tire between the tread and the
tire bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
part and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control, a roof rack
or a high-performance battery, are not
included in the unladen weight and the weight
of the accessories.
TIN (Tire Identification Number)
A unique identification number which can be
used by a tire manufacturer to identify tires,
for example for a product recall, and thus
identify the purchasers. The TIN is made up
of the manufacturer's identity code, tire size,
tire type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire.
Traction
Traction is the result of friction between the
tires and the road surface.
TWR (permissible trailer drawbar
noseweight)
The TWR is the maximum permissible weight
that the ball coupling of the trailer tow hitch
can support.
Wear indicator
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 1
/ 16 in
(1.6 mm) has been reached.
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Distribution of the vehicle occupants
Distribution of vehicle occupants over
designated seat positions in a vehicle.
Maximum permissible payload
weight
Nominal load and luggage load plus
68 kilograms (150 lb) multiplied by the
number of seats in the vehicle.
Wheel/tire combinations
Points to remember
GWarning
Observe the "Important safety information"
( Y page 320).
! For safety reasons, Mercedes-Benz
recommends that you only use tires,
wheels and accessories which have been
approved by Mercedes-Benz specifically
for your vehicle. These tires have been
specially adapted for use with the control
systems, such as ABS or ESP ®
, and are
marked as follows:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(tires with run-flat characteristics)
R MO1 = Mercedes-Benz Original (AMG)
Only use Mercedes-Benz Original Extended
tires on wheels that have been specifically
approved by Mercedes-Benz.
If you use other tires, wheels and
accessories, Mercedes-Benz cannot
accept any responsibility for damage that
may result from this. Further information
about tires, wheels and approved
combinations can be obtained from any
authorized Mercedes-Benz Center.
! If you mount tires other than those tested
and recommended by Mercedes-Benz,
characteristics such as handling, noise
levels and fuel consumption, etc. may be
adversely affected. In addition, when
driving with a load, tire dimensional
variations could cause the tires to come
into contact with the bodywork and axle
components. This could result in damage
to the tires or the vehicle.
i Further information about tires and
wheels can be obtained from any
authorized Mercedes-Benz Center.
i The Tire and Load Information placard
with the recommended tire pressures is
attached to the B-pillar on the driver's side.
Further information about driving at high
speeds or driving with vehicle loads that are
lighter than the maximum vehicle load can
be found in the tire pressure table on the
inside of the fuel filler flap. 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.
Further information on the recommended tire
inflation pressure and on tire pressures for
specific driving conditions, see (Y page 322).
i Notes on the vehicle equipment:
R always mount tires of the same size on a
given axle (left/right).
R always mount the same type of tires on
your vehicle at a given time (summer
tires, winter tires, MOExtended tires).
i Vehicles featuring the MOExtended run-
flat system are not equipped with a TIREFIT
kit.
It is therefore recommended that you
additionally equip your vehicle with the
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
A TIREFIT kit is available from any qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center.
i The following pages contain information
on approved wheel rims and tire sizes for
equipping your vehicle with winter tires.
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as standard equipment or as an optional
extra.
If you want to equip your vehicle with
approved winter tires, it may be necessary
to obtain wheel rims in the corresponding
size, as the size of the approved winter tires
may differ from the standard tires. This is
dependent on the model and the
equipment installed at the factory.
Tires, wheel rims and further information
can be obtained at a qualified specialist
workshop, e.g. an authorized Mercedes-
Benz Center.344Wheel/tire combinationsTires and wheels
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Tires of the same dimensions
i BA: Both axlesR 350R18BAAlloy wheels
Offset8 J x 18 H2
2.64 in (67 mm)Winter tires 44255/50 R18 105 H M+S
iR 350
R 350 BlueTEC 45R19BAAlloy wheels
Offset8 J x 19 H2
2.64 in (67 mm)All-weather tires255/50 R19 107 H XL M+SWinter tires 44255/50 R19 107 H XL M+S
iR 350
R 350 BlueTEC 46R19BAAlloy wheels
Offset8 J x 19 H2
2.64 in (67 mm)All-weather tires 47255/50 R19 107 H XL M+S MOExtendedWinter tires44, 47255/50 R19 107 H XL M+S
i MOExtendedR 350R19BAAMG alloy wheels
Offset8.5 J x 19 H2
2.52 in (64 mm)All-weather tires255/50 R19 107 H XL M+SWinter tires 44255/50 R19 107 H XL M+S
i44
Not available as standard equipment or optional equipment at the factory.
45 Canada only.
46 USA only.
47 Tires with run-flat characteristics must only be used in conjunction with an activated tire pressure loss
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R 350R20BAAlloy wheels
Offset8.5 J x 20 H2
2.36 in (60 mm)AMG alloy wheels
Offset8.5 J x 20 H2
2.36 in (60 mm)All-weather tires 48265/45 R20 108 H XL M+SWinter tires44, 48265/45 R20 108 H XL M+S
i
Spare tire
i Vehicles with MOExtended tires (tires with run-flat characteristics) are not equipped with
TIREFIT at the factory.
i The R 350 BlueTEC is not equipped with an emergency spare wheel.
i The prescribed tire pressure is also given on a yellow label on the emergency spare wheel.
Collapsible emergency spare wheel 49R 350R18Wheels
Offset6.5 B x 18 H2
1.58 in (40 mm)Tires195/75-18 106 PTire pressure300 kPa (3.0 bar/44 psi)48 Use of snow chains not permitted.
44 Not available as standard equipment or optional equipment at the factory.
49 Use of snow chains not permitted.346Wheel/tire combinationsTires and wheels
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Vehicle equipment ............................348
Genuine Mercedes-Benz parts .........348
Warranty ............................................ 348
Vehicle identification plates ............349
Service products and capacities .....350
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Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
Genuine Mercedes-Benz parts
All Mercedes-Benz Centers maintain a supply
of genuine Mercedes-Benz parts for
necessary service and repair work. In
addition, strategically located parts delivery
centers provide for quick and reliable parts
service.
More than 300,000 different parts are
available for Mercedes-Benz models.
Genuine Mercedes-Benz parts are subjected
to stringent quality inspections. Every part
has been specifically developed,
manufactured or selected for and adapted to
Mercedes-Benz vehicles.
Only genuine Mercedes-Benz parts should
therefore be used.
! The use of non-approved parts could
impair the vehicle's safety. For this reason,
Mercedes-Benz recommends genuine
Mercedes-Benz parts and approved
conversion parts and accessories for your
vehicle model.
HEnvironmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
Always specify the vehicle identification
number and engine number when ordering
genuine Mercedes-Benz parts. You will find
these numbers on your vehicle's
identification plates, for example
( Y page 349).
Warranty
Your vehicle is covered under the terms of the
warranties printed in the Service and
Warranty Information booklet.
Your authorized Mercedes-Benz Center will
exchange or repair any defective parts
originally installed in the vehicle in
accordance with the terms of the following
warranties:
R New Vehicle Limited Warranty
R Emission System Warranty
R Emission Performance Warranty
R California, Connecticut, Maine,
Massachusetts, New York, Pennsylvania,
Rhode Island and Vermont Emission
Control Systems Warranty 50
R State Warranty Enforcement Laws ("Lemon
Laws")
Replacement parts and accessories are
subject to the Mercedes-Benz Replacement
Part and Accessory Warranties. You can
obtain these at any Mercedes-Benz Center.
i Should you lose your Service and
Warranty Information booklet, have an
authorized Mercedes-Benz Center arrange
for a replacement. It will be mailed to you.
50 Only vehicles with a gasoline engine.348WarrantyTechnical data
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