2014 MERCEDES-BENZ B-CLASS SPORTS Owners Manual

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

X
Make sure the foot of the jack is directly
beneath the jackingp oint.
X Turn ratchet wrench 0021until jack 0023sits
completely on jackingp oint0010and the
base of the jack lies evenly on the ground.
X Turn ratchet wrench 0021until the tire is
raised amaximum of 1. 2in(3cm)from the
ground.
Removing awheel !
Do not place wheel bolts in sand or on a
dirty surface. The bol tand whee lhub
thread scould otherwise be damage dwhen
yo us cre wthem in.
X Unscrew the whee lbolts.
X Remov ethe wheel.
Mounting anew wheel G
WARNING
Oiled or greased wheel bolt sordamaged
wheel bolts/hub threads can cause th ewheel
bolt stoc omeloose .Asa result, you could
lose awheel while driving. There is arisk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contact aqualified
specialist workshop immediately.H ave the
damage dwheel bolt sorhub threads
replaced/renewed. Do no tcontinue driving. G
WARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is arisk 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 awheel"
section (Y page 336).
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
! 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 Place the new wheel on the wheel hub and
push it on.
X Tighten the wheel bolts until they are
finger-tight.
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 arisk of accident. Changing
awheel
339Wheels and tires
Z

Have the tightening torqu
eimmediately
checked at aqualifie dspecialist workshop
after awheel is changed. X
Place the ratche twrench onto the hexagon
nut of the jack so that the letters ABare
visible.
X Turn the ratchet wrench until the vehicl eis
once again standing firmly on the ground.
X Place the jack to one side.
X Tighten the whee lbolts evenly in a
crosswise pattern in the sequence
indicated ( 001Ato001E). The tightening torque
must be 96 lb-ft (130Nm ).
X Turn the jack back to its initia lposition.
X Stow the jack and the rest of the vehicle
tools in the vehicl eagain.
X Check the tire pressure of the newly
mounted whee land adjust it if necessary.
Observe the recommende dtire pressure
(Y page3 15). Wheel and tire combinations
General notes
! For safety reasons, Mercedes-Benz
recommends that you only use tires and
wheels which have been approved by
Mercedes-Benz specifically for your
vehicle. These tires have been speciallya
dapted for
use with the control systems ,such as ABS
or ESP ®
,a nd are marked as follows:
R MO =Mercedes-BenzO riginal
R MOE =Mercedes-BenzO riginal Extended
(tires featuring run-flat characteristics)
R MO1 =Mercedes-BenzO riginal (only
certain AMG tires)
Mercedes-Benz Original Extended tires
may only be used on wheels that have been
specificall yapproved by Mercedes-Benz.
Only use tires, wheels or accessories
tested and approved by Mercedes-Benz.
Certain characteristics, e.g. handling,
vehicl enoise emissions or fuel
consumption, may otherwise be adversely
affected. In addition, when driving with a
load, tire dimension variations coul dcause
the tires to come into contact with the
bodywork and axle components. This could
resul tind amage to th etires or th evehicle.
Mercedes-Ben zaccepts no liability for
damag eresulting from the us eoftires,
wheel soraccessorie sothe rthan those
tested and approved.
Information on tires, wheels and approved
combinations can be obtained from any
qualified specialist workshop.
! Retreaded tires are neither tested nor
recommended by Mercedes-Benz, since
previous damage cannot always be
detected on retreaded tires. As aresult,
Mercedes-Ben zcannot guarante evehicle
safety if retreade dtires are mounted. Do
no tm ount used tires if you have no
information about their previous usage.
Overview of abbreviations used in the
following tire tables:
R BA: both axles
R FA: front axle
R RA: rear axle 340
Wheel and tirec
ombinationsWheels and tires

The recommended pressures for various
operating conditions can be found:
R
on the Tire and Loading Information placard
with the recommended tire pressures on
the B-pillar on the driver's side
R in the tire pressure table on the inside of
the fuel filler flap
Observe the notes on recommended tire
pressures under various operating conditions
(Y page 315).
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.
Notes on the vehicle equipment –always
equip the vehicle with:
R tires of the same size on agiven axle (left/
right)
R the same type of tires at agiven time
(summer tires, winter tires, MOExtended
tires)
Exception: it is permissible to install a
differen ttype or mak einthe event of aflat
tire. Observe the "MOExtended tires (tires
with run-flat characteristics" section
(Y page 295).
Vehicles equipped with MOExtended tires are
not equipped with aTIREFIT kit at the factory.
It is therefore recommended that you
additionall yequip your vehicle with aTIREFIT
kit if you mount tires that do not feature run-
flat properties, e.g. winter tires. ATIREFIT kit
may be obtained from aqualified specialist
workshop.
i The following pagesc ontain information
on approved wheelr im and tire sizes for
equipping yourv ehicle with winter tires.
Winter tires are not available at the factory
as standard equipment or optional extras.
If you want to equip your vehicle with
approved winter tires, it may be necessary
to obtain wheel rims in the corresponding
size. The size of the approved winter tires
may differ from the standard tires. This is dependen
tonthe model and the
equipment installed at the factory.
The tires and wheel rims, as well as further
information ,can be obtained at aqualified
specialist workshop.
In the following table, the wheel/tire
combinations are assigned to the vehicle
models through variants, e.g. V1, V2 etc.: V1 B2
50 i
Not all wheel and tire combinations are
available at the factory for all countries. Wheel and tire combinations
341Wheels and tires Z

Tires
Summe
rtires Allo
ywheels V1
BA
225/40 R18 92
WXL5, 6 7.5
Jx18H2
Whee loffset: 2.05 in (52 mm) 0012
All-weather tires Alloy wheels V1
BA
225/45 R17 91
HM+S5, 6 7.5
Jx17H2
Whee loffset: 2.07 in (52.5 mm) 0012
Winte
rtires Alloy wheels V1
BA
205/50 R17 93
HXLM+S000E 5 6.5
Jx17H2
Whee loffset: 1.93 in (49 mm) 0012
Emergency spare wheel
Important safety notes
G
WARNING
The wheel or tire size as wel lasthe 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 arisk of an accident.
To avoi dhazardou ssituations:
R adapt you rdriving style accordingly and
drive carefully.
R never mount more than one spare whee lor
emergency spare whee lthat differs in size.
R only use aspare whee loremergency spare
whee lofad ifferent size briefly.
R do not switch ESP ®
off.
R have aspare whee loremergency spare
whee lofad ifferent size replaced at the
nearest qualified specialist workshop.
Observe that the whee land tire dimensions
as wellast he tire type must be correct. When using an emergency spare whee
lor
spare whee lofadifferent size, you must not
exceed the maximu mspee dof50m ph
(80 km/h).
Snow chains must not be mounted on
emergency spare wheels. General notes
i Apart from some country-specific
variants, the vehicles are not equipped with
an emergency spare wheel. Emergency
spare wheels are specifi ctothe vehicle. For
more information on which emergency
spare wheels are approved for your vehicle,
consult aqualified specialist workshop.
You should regularly check the pressure of
the emergency spare wheel, particularly prior
to long trips, and correct the pressure as
necessary (Y page 315). The value on the
wheel or as given in the "Wheels and tires"
section (Y page 343) is valid.
i When you are driving with the collapsible
spare wheel mounted, the tire pressure
loss warning system or the tire pressure
5 Also available as MOExtended tires.
6 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section. 342
Emergency sparew
heelWheels and tires