MERCEDES-BENZ B-CLASS SPORTS 2014 Owners Manual

not covered with ice or snow
.Take
appropriate car ewhend riving.
! Avoi dwheelspin .Thisc an lead to damage
to the drive train. Temperature
G
WARNING
The temperatur egrade for thi stire is
established for atire tha tisproperly inflated
and not overloaded.E xcessive speed,
underinflation, or excessive loading ,either
separatel yorincombination, can cause
excessive hea tbuild-up and possible tire
failure.
The temperatur egrades are A(the highest),
B, and C. Thes erepresent the tire's
resistanc etothe generatio nofheat and its
ability to dissipate heat when tested under
controlled conditions on aspecified indoor
laboratory test wheel. Sustained high
temperature can cause the material of the tire
to degenerat eand reduce tire life, and
excessive temperature can lead to sudden
tire failure. The grade Ccorresponds to alevel
of performanc ewhich all passenger car tires
must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades Band A
represent higher levels of performanc eonthe
laboratory test wheel than the minimum
required by law. Tire labeling
Overview of tire labeling
The following markings are on the tire in addition
to the tire name (sales designation) and the
manufacturer's name:
001A
Uniform tire Quality Grading Standard
(Ypage 333)
0010 DOT, Tire Identification Number
(Ypage 332)
0023 Maximum tire load (Y page 327)
0021 Maximum tire pressure (Y page 318)
001E Manufacturer
0024 Tire material (Y page 333)
0007 Tire size designation, load-bearing
capacity and speed index (Y page 330)
0008 Load index (Y page 332)
0009 Tire name
i Tire data is vehicle-specific and may
deviate from the data in the example. Tirel
abeling
329Wheels and tires Z

Tire size designation
,load-bearing
capacit yand speed rating 001A
Tire width
0010 Nominal aspec tratio in %
0023 Tire code
0021 Rim diameter
001E Load bearing index
0024 Speed rating
i Tire dat aisvehicle-specific and may
deviate from th edataint heexample.
General: dependingonthemanufacturer's
standards ,the sizeimprinted in th etirew all
may no tcontai nany letters or may contain
on elette rthat precedes the size description.
If there is no letter preceding the size
description (as shown above): these are
passenger vehicle tires according to
European manufacturing standards.
If "P" precedes the size description: these are
passenger vehicle tires according to U.S.
manufacturing standards.
If "LT" precedes the size description: these
are light truck tires according to U.S.
manufacturing standards.
If "T" precedes the size description: these are
compact emergency spare wheels at high tire
pressure, to be used only temporarily in an
emergency.
Tire width: tire width001Ashows the nominal
tire width in millimeters.
Nominal aspect ratio: aspect ratio0010is the
size ratio between the tire height and the tire
width and is shown in percent.T he aspectratio is calculated by dividing the tire width by
the tire height.
Tire code:
tire code0023specifies the tire type.
"R" represents radial tires; "D" represents
diagonal tires; "B" represents diagonal radial
tires.
Optionally, tires with amaximum speed of
over 149mph (240km/h) may have "ZR"in
the size description, depending on the
manufacturer (e.g. 245/40 ZR 18).
Rim diameter: rim diameter0021is the
diameter of the bead seat, not the diameter
of the rim flange. The rim diameter is
specified in inches (in).
Load bearing index: load bearing index001E
is an umerical code which specifies the
maximum load-bearing capacity of atire.
Do not overload the tires by exceeding the
specified load limit. The maximum
permissible load can be found on the
vehicle's Tire and Loading Information
placard on the B-pillar on the driver's side
(Y page 323).
Example:
Al oad-bearing index of 91 indicates a
maximum load of 1,356lb (615kg) that can be
carried by the tires. For further information on
the maximum tire load in kilograms and
pounds, see (Y page 327).
For further information on the load-bearing
index, see Load index (Y page 332).
Speed rating: speed rating0024specifies the
approved maximum speed of the tire. G
WARNING
Exceeding the stated tire load-bearing
capacity and the approved maximum speed
could lead to tire damage or the tire bursting.
There is arisk of accident.
Therefore, only use tire types and sizes
approved for your vehicle model. Observe the
tire load rating and speed rating required for
your vehicle.
Regardless of the speed rating, always
observe the speed limits. Drive carefully and 330
Tirel
abelingWheels and tires

adapt your driving style to th
etraffic
conditions. Summer tires
Index Speed rating
Q up to 100mph (16
0km/h) R up to 106mph (17
0km/h) S up to 112mph (18
0km/h) T up to 118mph (19
0km/h) H up to 130mph (21
0km/h) V up to 149mph (24
0km/h) W up to 168mph (27
0km/h) Y up to 186mph (30
0km/h) ZR...Y up to 186mph (30
0km/h) ZR...(..Y) ove
r186mp h(30 0k m/h) ZR ove
r149mp h(24 0k m/h) R
Optionally, tires wit hamaximum spee dof
ove r149 mph (240km/h) may have "ZR" in
the size description, depending on the
manufacture r(e.g. 245/40 ZR 18).
The service specifications consist of load
bearing index 001Eand spee drating 0024.
R If the size description of you rtire includes
"ZR" and there are no service
specifications, ask the tir emanufacturer in
order to fin dout the maximum speed.
If as ervice specification is available, the
maximum speed is limited accordin gtothe
speed rating in the service specification.
Example: 245/4 0ZR1897Y.Int his
example, "97 Y" is the service specification.
The letter "Y" represents the speed rating
and the maximum speed of the tir eis
limited to 186 mph (300km/h).
R The size description for all tires with
maximum speeds of over 186mph
(300km/h )must include "ZR", andthe service specification must be given in
brackets. Example: 275/4
0ZR18(99 Y).
The speed rating "(Y)" indicates that the
maximum speed of the tir eisover 186mph
(300km/h). Ask the tir emanufacturer
about the maximum speed. All-weather tires and winter tires
Index Speed rating
QM
+S4 up to 100mph (16
0km/ h) TM
+S4 up to 118mph (19
0km/ h) HM
+S4 up to 130mph (21
0km/ h) VM
+S4 up to 149mph (24
0km/ h) i
Not all tires with the M+S marking provide
the drivin gcharacteristics of winter tires.
Winter tires have, in additio ntothe M+S
identification, the 000Esnow flake symbol
on the tire sidewall. Tires with this marking
fulfill the requirements of the Rubber
Manufacturers Association (RMA) and the
Rubber Association of Canada (RAC)
regarding the tire traction on snow. They
have been especially developed for driving
on snow.
An electronic speed limiter prevent syour
vehicle from exceeding aspeed of 130mph
(210km/h).
The speed rating of tires mounted at the
factor ymay be higher than the maximum
speed that the electronic speed limiter
permits.
Make sure that your tires have the required
speed rating, e.g. when buying new tires. The
required speed rating for your vehicle can be
found in the "Tires" section (Y page 340).
Further information about reading tire data
can be obtained from any qualified specialist
workshop.
4 Or M+S000E for winter tires. Tirel
abeling
331Wheels and tires Z

Load index
In addition to th
eload bearin gindex, load
index 001Amay be imprinted after th eletters
that identif yspeed index 0024(Ypage 330) on
th es idewall of th etire.
R If no specificatio nisgiven: no text (as in the
example above), represents astandard
load (SL )tire
R XL or Extra Load: represents areinforced
tire
R Ligh tLoad: represent salight load tire
R C, D, E: represent saload range that
depends on the maximum load that the tire
can carry at acertain pressure
i Tire data is vehicle-specific and may
deviate from the data in the example. DOT, Tire Identification Number (TIN)
Canadia
ntire regulations prescribe that every
new tir emanufacturer or retreader has to
imprin taTIN in or on the sidewall of each tire
produced. The TIN is
aunique identification number. The
TIN makes it easier for tire manufacturers or
retreaders to notify customers of recalls or
other safety-related matters. It makes it
possible for the purchaser to easily identify
the affected tires.
The TIN consists of the manufacturer
identification code 0010,tire size 0023,tire type
code 0021and manufacturing date 001E.
DOT (Department of Transportation): tire
symbol 001Aindicates that the tire complies
with the requirement softhe Canadian
Transport Ministry.
Manufacturer identification code:
manufacturer identification code 0010provides
details on the tire manufacturer. New tires
have acode with two symbols. Retreaded
tires have acode with four symbols.
Further information about retreaded tires
(Y page 312).
Tire size: identifier0023describes the tire size.
Tire typec ode:tire type code 0021can be
used by the manufacturer as acode to
describe specific characteristics of the tire.
Date of manufacture: date of manufacture
001E 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, atire that is marked with
"3208", was manufactured in week 32 in
2008.
i Tire data is vehicle-specific and may
deviate from the data in the example. 332
Tirel
abelingWheels and tires

Tire characteristics
Thi
sinformatio ndescribes the tire cord and
the number of layers in sidewall 001Aand under
tire tread 0010.
i Tire data is vehicle-specific and may
deviate from the data in the example. Definition of term
sfor tires and
loading Tirep
ly composition and material
used
Describes the number of plies or the number
of layers of rubber-coated fabric in the tire
tread and sidewall. These are made of steel,
nylon, polyester and other materials. Bar
Metric unit for tire pressure.
14.5038p ounds per square inch (psi) and
100 kilopascals (kPa) are the equivalent of
1b ar. DOT (Department of Transportation)
DOT marked tires fulfill the requirements of
the Canadia nTransport Ministry. Normal occupant weight
The number of occupants for which the
vehicl eisdesigned multiplied by
68 kilograms (150 lb). Uniform Tire Quality Grading
Standards
Au niform standard to grade the quality of
tire swithr egards to trea dquali ty,tire traction
and temperatur echaracteristics. Rating sare
determine dbytire manufacturer susing U.S.
government testing procedures. The ratings
ar em olde dinto the sidewall of the tire. Recommende
dtire pressure
The recommende dtire pressure applie sto
the tire smounted at the factory.
The Tire and Loading Informatio nplacard
contain sthe recommende dtirep ressures for
cold tires on afully loaded vehicle and for the
maximum permissible vehicle speed.
The tir epressure table contain sthe
recommende dpressures for cold tires for
various operating conditions, i.e. differing
load and speed conditions. Increased vehicle weight du
eto
optional equipment
This is the combined weight of all standard
and optional equipmen tavailablef or the
vehicle, regardless of whethe ritisactually
installed on the vehicle or not. Rim
This is the part of the wheel on which the tire
is mounted. Definition of termsf
or tires and loading
333Wheels and tires Z

GAWR (Gross AxleW
eight Rating)
The GAWR is the maximu mgross axle weight
rating. The actua lloa donana xle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicl eidentification plate on the B-pillar on
the driver's side. Speed rating
The spee drating is part of the tire
identification. It specifies the spee drange for
which the tire is approved. GVW (Gross Vehicle Weight)
The gross vehicl eweight includes the weight
of the vehicl eincluding fuel ,tools, the spare
wheel, accessories installed, occupants,
luggage and the drawbar noseweight, if
applicable.T he 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 afully 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 loaded vehicle weight
The maximum weight is the sum of:
R the curb weight of the vehicle
R the weight of the accessories
R the load limit
R the weight of the factory installed optional
equipment Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa
corresponds to 1psi. Another unit for tire
pressure is bar. 100 kilopascal (kPa) is the
equivalent of 1bar. Load index
In addition to th eload-bearing index ,the load
index may also be imprinted on th esidewall
of th etire. This specifie sthe load-bearing
capacity more precisely. Curb weight
The weight of avehicle 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 in the vehicle, but does
not include passengers or luggage. Maximum load rating
The maximum load rating 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. 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 squarei
nch)
As tandar dunitofm easure for tire pressure. 334
Definition of terms for tires and loadingWheels and tires

Aspect ratio
Relationship between tire height and tire
widt hinp ercent. Tire pressure
This is pressur einside th etirea pplyin gan
outward force to eac hsquar einc hoft hetire's
surface. The tire pressur eisspecifie din
pounds per squar einc h( psi), in kilopascal
(kPa) or in bar. The tire pressur eshould only
be correcte dwhen th etires are cold. Tire pressure of cold tires
The tires are cold:
R if th evehicl ehas been parked without
direct sunligh tonthe tires for at least three
hours and
R if the vehicle has not been driven further
than 1mile (1.6 km) Tread
The part of the tire that comes into contact
with the road. Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim. Sidewall
The part of the tire between the tread and the
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 kg (5 lbs). These optional extras, such as high-performance
brakes, level control,
aroof rack or ahigh-
performance battery, are not included in the
curb weight and the weight of the
accessories. TIN (Tire Identification Number)
This is aunique identifier which can be used
by atire manufacturer to identify tires, for
example for aproduct 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 atire. Traction
Traction is the result of friction between the
tires and the road surface. 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 0003in
(1.6 mm) has been reached. Occupant distribution
The distribution of occupants in avehicle at
their designated seating positions. Total load limit
Nominal load and luggage load plus
68 kilograms (150 lb) multiplied by the
number of seats in the vehicle. Definition of termsf
or tires and loading
335Wheels and tires Z

Changing
awheel Flat tire
You can find information on wha ttodointhe
event of aflat tire in the "Flat tire" section
(Y page 295). Information on driving with
MOExtended tires in the event of aflat tire
can be found under "MOExtended tires (tires
with run-flat characteristics" (Y page 295).
Vehicle with emergency sparew heel:in
the event of aflat tire, the emergenc yspare
wheel is mounted as described under
"Mounting awheel" ( Ypage 337). Rotating the wheels
G
WARNING
Interchangin gthe 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 arisk of
accident.
Rotate front and rear wheels only if the wheels
and tires are of the same dimensions.
! On vehicles equipped with atire 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 aqualified
specialist workshop.
Always pay attention to the instructions and
safety notes when changing awheel
(Y page 336).
The wear pattern sonthe front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before aclear wear pattern
has formed on the tires. Frontt ires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotatet he 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 contac tsurface softhe wheel and
the brake disc thoroughly every time awheel
is rotated. Check the tire pressure and, if
necessary, restart the tire pressure loss
warning system or the tire pressure monitor. Direction of rotation
Tires with aspecified direction of rotation
have additional benefits, e.g. if there is arisk
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
Storew heels that are not being used in acool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel. Cleaningt
he wheels G
WARNING
The water jet from acircular 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 arisk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately. 336
Changing
awheelWheels and tires

Mountin
gawheel
Preparing the vehicle X
Stop the vehicle on solid, non-slippery and
leve lground.
X Apply the electric parking brake manually
(Y pag e153).
X Bring the front wheels into the straight-
ahead position.
X Move the DIRECT SELECT leve rtoposition
P.
X Switch off the engine.
X Remove the SmartKey from the ignition
lock.
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
awheel chock,
it can be found in the tire-change tool kit
(Y page 294).
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away,f or example when changing a
wheel.
X Fold both plates upwards 001A.
X Fold out lower plate 0010.
X Guide the lugs on the lower plate fully into
the openings in base plate 0023. Securing the vehicle on level ground
X
On level ground: place chocksorother
suitable items under the front and rear of
the wheel that is diagonally opposite the
wheel you wish to change. Securing the vehicle on slight downhill gradients
X
On light downhill gradients: place
chocksoro ther 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 arisk of injury.
Only position the jack at the appropriate
jacking point of the vehicle. The base of the
jack must be positioned vertically,d irectly
under the jacking point of the vehicle. Changing
awheel
337Wheels and tires Z

The followin
gmust be observe dwhen
raisin gthe 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 coul dtip over with the
vehicle raised.
R the jack is designed only to raise and hold
the vehicle for ashort time while awheel
is being changed .Itisnot suited for
performing maintenance work under the
vehicle.
R avoid changing the wheel on uphilla nd
downhill slopes.
R before raising the vehicle, secure it from
rolling awaybya pplying the parking brake
and inserting wheel chocks. Never
disengage the parking brake while the
vehicle is raised.
R the jack must be placed on afirm, flat and
non-slip surface. On aloose surface, a
large, load-bearing underlay must be used.
On aslippery surface, anon-slip underlay
must be used, e.g. rubber mats.
R do not use wooden blocks or similar
objects as ajack underlay.O therwise, the
jack will not be able to achieve its load-
bearing capacity du etothe restricted
height.
R make sure tha tthe distance between the
underside of the tires and the ground does
not exceed 1.2 in (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 adoor or the trunk lid
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
jackingupt he vehicle at the jackingp oints.
Otherwise, your vehicle could be damaged. X
Using lug wrench 001A,loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts
completely. The jackingp
oints 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 tire-
changing tool kit and place it on the
hexagon nut of the jack so that the letters
AUF are visible. X
Position jack 0023at jackingp oint0010. 338
Changing
awheelWheels and tires