The traction grades – from highest to lowest –
are AA, A, B and C. Those grades represent the
tire's ability to stop on wet pavement as meas-
ured under controlled conditions on specified
government test surfaces of asphalt and con-
crete. A tire marked C may have poor traction
performance.
The safe speed on a wet, snow covered or icy
road is always lower than on dry road surfaces.
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Mercedes-Benz recommends a minimum tread
depth ofãin (4 mm) on all four winter tires.
Observe the legally required minimum tire tread
depth (
Ypage 322). Winter tires can reduce the
braking distance on snow-covered surfaces in
comparison with summer tires. The braking dis-
tance is still much further than on surfaces that are not icy or covered with snow. Take appro-
priate care when driving.
Further information on winter tires (M+S tires)
(
Ypage 323).
Temperature
GWARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, or excessive loading, either separately or
in combination, can cause excessive heat
build-up and possible tire failure.
The temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel. Sus-
tained high temperature can cause the material
of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire
failure. The grade C corresponds to a level of
performance which all passenger car tires must
meet under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A represent
higher levels of performance on the laboratory
test wheel than the minimum required by law.
Tire labeling
Overview
:Uniform Tire Quality Grading Standards
(Ypage 339)
;Department of Transportation, Tire Identifi-
cation Number (Ypage 338)
=Maximum load rating (Ypage 338)
?Maximum tire pressures (Ypage 327)
AManufacturer
BTire material (Ypage 338)
CTire size designation, load-bearing capacity
and speed rating (Ypage 335)
DLoad index (Ypage 337)
ETire name
The markings described above are on the tire in
addition to the tire name (sales designation) and
the manufacturer's name.
iTire data is vehicle-specific and may deviate
from the data in the example.
Tire size designation, load-bearing
capacity and speed rating
GWARNING
Exceeding the stated tire load-bearing capa-
city and the approved maximum speed could
lead to tire damage or the tire bursting. There is a risk of accident.
Therefore, only use tire types and sizes
approved for your vehicle model. Observe the
All about wheels and tires335
Wheels and tires
Z
the size description, depending on the man-
ufacturer (e.g. 245/40 ZR18).
The service specification is made up of load-
bearing indexAand speed rating B.
RIf the size description of your tire includes
"ZR" and there are no service specifications,
ask the tire manufacturer in order to find out
the maximum speed.
If a service specification is available, the max-
imum speed is limited according to the speed
rating in the service specification. Example:
245/40 ZR18 97 Y.In this example, "97 Y" is
the service specification. The letter "Y" rep-
resents the speed rating. The maximum
speed of the tire is limited to 186 mph
(300 km/h).
RThe size description for all tires with maxi-
mum speeds of over 186 mph (300 km/h)
must include "ZR", andthe service specifica-
tion must be given in parentheses. Example:
275/40 ZR 18 (99 Y). Speed rating "(Y)" indi-
cates that the maximum speed of the tire is
over 186 mph (300 km/h). Ask the tire man-
ufacturer about the maximum speed.
All-weather tires and winter tires
IndexSpeed rating
Q M+S2up to 100 mph (160 km/h)
T M+S2up to 118 mph (190 km/h)
H M+S2up to 130 mph (210 km/h)
V M+S2up to 149 mph (240 km/h)
iNot all tires with the M+S marking provide
the driving characteristics of winter tires. In
addition to the M+S marking, winter tires also
have the isnowflake symbol on the tire
wall. Tires with this marking fulfill the require-
ments of the Rubber Manufacturers Associa-
tion (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 prevents your vehi-
cle from exceeding the following speeds:
RAll vehicles (except Mercedes-AMG GLE 63):
130 mph (210 km/h)
RMercedes-AMG GLE 63 vehicles: 155 mph
(250 km/h)
RMercedes-AMG GLE 63 with increased top
speed: 174 mph (280 km/h)
The speed rating of tires mounted 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 rating, e.g. when buying new tires. The
required speed rating for your vehicle can be
found in the "Tires" section (
Ypage 345).
Further information about reading tire data can
be obtained from any qualified specialist work-
shop.
Load index
In addition to the load bearing index, load
index :may be imprinted after the letters that
identify speed index Bon the sidewall of the
tire (
Ypage 335).
RIf no specification is given: no text (as in the
example above), represents a standard load
(SL) tire
RXL or Extra Load: represents a reinforced tire
RLight Load: represents a light load tire
RC, D, E: represents a load range that depends
on the maximum load that the tire can carry at
a certain pressure
iTire data is vehicle-specific and may deviate
from the data in the example.
2Or M+S ifor winter tires.
All about wheels and tires337
Wheels and tires
Z
Changing a wheel
Flat tire
The "Breakdown assistance" section
(Ypage 306) contains information and notes on
how to deal with a flat tire. Information on driv-
ing with MOExtended tires in the event of a flat
tire can be found under "MOExtended tires (tires
with run-flat characteristics" (
Ypage 307).
Vehicles with an emergency spare wheel: in
the event of a flat tire, mount the emergency
spare wheel according to the description under "Mounting a wheel" (
Ypage 341).
Rotating the wheels
GWARNING
Interchanging the 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 a risk of acci-
dent.
Rotate front and rear wheels only if the wheels and tires are of the same dimensions.
!On vehicles equipped with a tire 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 a qualified spe-
cialist workshop.
Always observe the instructions and safety
notes in the "Mounting a wheel" section
(
Ypage 341).
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires in
the center.
On vehicles that have the same size front and
rear wheels, you can rotate the wheels accord-
ing 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 (5,000to
10,
000 km). Depending on tire wear, this may be required earlier. Do not change the direction
of wheel rotation.
Clean the contact surfaces of the wheel and the
brake disc thoroughly every time a wheel is rota-
ted. Check the tire pressure and, if necessary,
restart the tire pressure loss warning system or
the tire pressure monitor (
Ypage 328).
Direction of rotation
Tires with a specified direction of rotation have
additional benefits, e.g. if there is a risk of hydro-
planing. These advantages can only be gained if
the tires are installed corresponding to the
direction of rotation.
An arrow on the sidewall of the tire indicates its
correct direction of rotation.
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the tires
from oil, grease, gasoline and diesel.
Mounting a wheel
Preparing the vehicle
XVehicle with emergency spare wheel:
when mounting the emergency spare wheel in
the event of a flat tire, follow the additional
notes on vehicle preparation under "Flat tire"
(
Ypage 306).
XStop the vehicle on solid, non-slippery and
level ground.
XApply the electric parking brake manually.
XBring the front wheels into the straight-ahead position.
XVehicles with automatic transmission:
shift the automatic transmission to position
P .
XVehicles with the AIRMATIC package:
make sure that the normal vehicle level is
selected (
Ypage 171).
XSwitch off the engine.
XVehicles without KEYLESS-GO: remove the
SmartKey from the ignition lock.
Changing a wheel341
Wheels an d tires
Z
XUnscrew the uppermost wheel bolt com-
pletely.
XScrew alignment bolt:into the thread
instead of the wheel bolt.
XUnscrew the remaining wheel bolts fully.
XRemove the wheel.
Mounting a new wheel
GWARNING
Oiled or greased wheel bolts or damaged
wheel bolts/hub threads can cause the wheel bolts to come loose. As a result, you could
lose a wheel while driving. There is a risk of
accident.
Never oil or grease wheel bolts. In the event of
damage to the threads, contact a qualified
specialist workshop immediately. Have the
damaged wheel bolts or hub threads
replaced/renewed. Do not continue driving.
GWARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
!To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
Always pay attention to the instructions and
safety notes in the "Changing a wheel" section
(
Ypage 341).
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety rea-
sons, Mercedes-Benz recommends that you only use wheel bolts which have been approved
for Mercedes-Benz vehicles and the respective
wheel.
!Always use wheel bolts
;to mount the
"Minispare" emergency spare wheel. Using
other wheel bolts to mount the "Minispare"
emergency spare wheel could damage the
brake system.
:Wheel bolts for all wheels supplied by the
factory and for the collapsible spare wheel
(Mercedes-AMG GLE 63)
;Wheel bolts for the collapsible spare wheel
XClean the wheel and wheel hub contact sur-
faces.
XSlide the wheel to be mounted onto the align-
ment bolt and push it on.
XTighten the wheel bolts until they are finger-
tight.
XUnscrew the alignment bolt.
XTighten the last wheel bolt until it is finger-
tight.
XMercedes-AMG vehicles with a collapsi-
ble spare wheel: inflate the collapsible spare
wheel (
Ypage 349).
Only then lower the vehicle.
344Changing a wheel
Wheels and tires
Lowering the vehicle
GWARNING
The wheels could work loose if the wheel nuts and bolts are not tightened to the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed.
!Mercedes-AMG vehicles with a collapsi-
ble spare wheel: before lowering the vehicle,
inflate the collapsible spare wheel with the
tire inflation compressor. The wheel rim could
otherwise be damaged.
XPlace the ratchet wrench onto the hexagon
nut of the jack so that the letters ABare visi-
ble.
XTurn the ratchet wrench until the vehicle is
once again standing firmly on the ground.
XPlace the jack to one side.
XTighten the wheel bolts evenly in a crosswise pattern in the sequence indicated (: toA).
The tightening torque must be
110 lb-f t(150 Nm).
XTurn the jack back to its initial position.
XStow the jack and the rest of the tire-change
tool kit in the stowage well under the cargo
compartment floor again.
XCheck the tire pressure of the newly mounted
wheel and adjust it if necessary.
Observe the recommended tire pressure
(
Ypage 324).
When you are driving with the collapsible spare
wheel mounted, the tire pressure loss warning
system or the tire pressure monitor cannot func-
tion reliably. Only restart the tire pressure loss
warning system or tire pressure monitor when the defective wheel has been replaced with a
new wheel.
Vehicles with a tire pressure control sys-
tem:
all installed wheels must be equipped with
functioning sensors.
Wheel and tire combinations
You can ask for information regarding permitted
wheel/tire combinations at an authorized
Mercedes-Benz Center.
!For safety reasons, Mercedes-Benz recom-
mends that you only use tires and wheels
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:
RMO = Mercedes-Benz Original
RMOE = Mercedes-Benz Original Extended
(tires featuring run-flat characteristics)
RMO1 = Mercedes-Benz Original (only cer-
tain AMG tires)
Mercedes-Benz Original Extended tires may
only be used on wheels that have been spe-
cifically approved by Mercedes-Benz.
Only use tires, wheels or accessories tested
and approved by Mercedes-Benz. Certain
characteristics, e.g. handling, vehicle noise
emissions or fuel consumption, may other-
wise be adversely affected. In addition, when
driving with a load, tire dimension 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 vehi- cle.
Mercedes-Benz accepts no liability for dam-
age resulting from the use of tires, wheels or
accessories other than those tested and
approved.
Information on tires, wheels and approved
combinations can be obtained from any quali-
fied specialist workshop.
!Retreaded tires are neither tested nor rec-
ommended by Mercedes-Benz, since previ-
ous damage cannot always be detected on
retreaded tires. As a result, Mercedes-Benz
cannot guarantee vehicle safety if retreaded
tires are mounted. Do not mount used tires if
Wheel and tire combinations345
Wheels and tires
Z
you haveno information about their previous
usage .
The recommended pressures for various oper -
ating condition scan be found :
Ron theTir eand Loadin gInformation placard
on th eB-pillar on th edriver's side
Rin th etire pressur etable in th efuel filler flap
Observ eth enote son recommended tire pres-
sures under various operating condition s
(
Ypage 324).
Chec ktire pressures regularly, and only when
th etires are cold. Comply wit hth emaintenance
recommendation sof th etire manufacturer in
th evehicl edocumen twallet .
Notes on th evehicl eequipmen t –always equip
th evehicle:
Rwit htires of th esam esiz eon agiven axl e(lef t
and right )
Rwithth esam etyp eof tires at agiven time
(summer tires ,winte rtires ,MOExtended
tires )
Vehicles equipped wit hMOExtended tires are
no tequipped wit h aTIREFI Tki tat th efactory. It
is therefor erecommended that you additionally
equip your vehicl ewit h a TIREFI Tki tif you moun t
tires that do no tfeature run-flat properties, e.g.
winte rtires . ATIREFI Tki tmay be obtained from
a qualified specialist workshop .
Emergency spare wheel
Impor tant safety notes
GWARNIN G
The whee lor tire siz eas well as th etire typ eof
th espar ewhee lor emergenc yspar ewhee l
and th ewhee lto be replaced may differ .
Mounting an emergenc yspar ewhee lmay
severely impair th edrivin gcharacteristics .
There is aris kof an accident.
To avoid hazardous situations:
Radapt your drivin gstyle accordingly and
drive carefully.
Rnever moun tmor ethan on espar ewhee lor
emergenc yspar ewhee lthat differ sin size.
Ronly use aspar ewhee lor emergenc yspar e
whee lof adifferen tsiz ebriefly.
Rdo no tswitch ES P®off.
Rhav e a spar ewhee lor emergenc yspar e
whee lof adifferen tsiz ereplaced at th e
neares tqualified specialist workshop .
Observ ethat th ewhee land tire dimension s
as well as th etire typ emus tbe correct.
!Mercedes-AMG vehicles wit h
"Minispare" emergency spar ewheel :only
use th e"Minispare" emergenc yspar ewhee l
on th erea raxle .If you moun tth e
"Minispare" emergenc yspar ewhee lon th e
fron taxle, this could result in damage to th e
brak esystem.
If atire on th efron taxl eis defective, an intac t
whee lfrom th erear axl emus tfirst be
replaced wit hth e"Minispare" emergenc y
spar ewheel. The damaged whee lon th efron t
axl ecan then be replaced by th eundamaged
whee lfrom th erear axle.
Mak esur eto note th eplacard on th e
"Minispare" emergenc yspar ewheel.
Whe nusin gan emergenc yspar ewhee lor spar e
whee lof adifferen tsize, you mus tno texceed
th emaximum speed of 50 mph (80 km/h).
Snow chain smus tno tbe mounte don emer-
gency spar ewheels.
Gene ral notes
You can ask for information regarding permitte d
emergenc yspar ewheels at an authorized
Mercedes-Ben zCenter.
Mounting th eemergenc yspar ewhee lis descri-
bed under "Mounting awheel" (
Ypage 341).
You should regularl ychec kth epressur eof th e
emergenc yspar ewheel, particularly prior to
lon gtrips, and correc tth epressur eas neces-
sar y (
Ypage 324). The value on th ewhee lis
valid.
An emergenc yspar ewhee lmay also be moun -
te dagainst th edirection of rotation .Observ e
th etime restriction on use as well as th espeed
limitation specified on th eemergenc yspar e
wheel.
Replac eth etires after six years at th elatest ,
regardless of wear .This also applie sto th e
emergenc yspar ewheel.
Whe nyou are drivin gwit hth ecollapsible spar e
whee lmounted, th etire pressur eloss warnin g
system or th etire pressur emonitor canno tfunc-
346Emergency spare wheel
Wheels and tires
Inflating the collapsible spare wheel
(Mercedes-AMG GLE 63)
!
Inflat eth ecollapsible spar ewhee lusin gth e
tire inflation compressor before lowering th e
vehicle. The whee lrim could otherwise be
damaged.
!Do no toperate th etire inflation compressor
for longer than eigh tminute sat atime without
a break. It may otherwise overheat.
The tire inflation compressor can be operate d
again once it has cooled down .
Comply wit hth emanufacturer' ssafet yinstruc-
tion son th etire inflation compressor label and
on th etire sealan tbottle.
XMoun tth ecollapsible spar ewhee las descri-
bed (Ypage 341).
The collapsible spar ewhee lmust be mounte d
before it is inflated.
XRemove th etire inflation compressor from
th estowage spac eunder th etrunk floor
(
Ypage 306).
XPull connecto r? and hos eB out of th e
housing .
XRemove th ecap from th evalv eon th ecol-
lapsible spar ewheel.
XScrew unio nnut ;of hos eB onto th evalve.
XMak esur eon/off switch Aof th etire infla-
tion compressor is set to 0.
XInsertconnecto r? intoth esocke tin th e
center console in th erear compartmen tor in
th esocke tin th ecargo compartment.
Socket in th erear compartment:
(
Ypage 281)
Socket in th ecargo compartment:
(
Ypage 281)
Only operate th etire inflation compressor
usin gth esocke tin th erear compartmen tor in th
ecargo compartment, eve nif th eignition
is turne doff .
An emergenc ycut-out ensures that th eon -
boar dvoltag edoes no tdro pto olow. If th eon -
boar dvoltag eis to olow, th epower to th e
sockets is automatically cut .This ensures
that there is sufficien tpower to start th e
engine.
Observ eth efurther information on sockets
(
Ypage 280).
XTurn th eSmartKey to position 1in th eignition
loc k (Ypage 125).
XPress on and off switch Aon th etire inflation
compressor to I.
The tire inflation compressor is switched on .
The tire i
s inflated. The tire pressur eis shown
on pressur egauge =.
XInflateth etire to th especifie dtire pressure.
The specifie dtire pressur eis printe don th e
yellow label of th eemergenc yspar ewheel.
XWhen th especifie dtire pressur ehas been
reached, press on and off switch Aon th e
tire inflation compressor to 0.
The tire inflation compressor is switched off .
XTurn theSmartKey to position 0in th eignition
lock.
XIf th etire pressur eis higher than th especifie d
pressure, press pressur erelease valv ebut -
to n: until th ecorrec ttire pressur ehas been
reached.
XUnscrew unio nnut ;on hos eB from th e
valve.
XScrew th ecap onto th evalv eof th ecollapsi-
ble spar ewhee lagain .
XStow connecto r? and hos eB in th elower
section of th etire inflation compressor.
XStow th etire inflation compressor in th evehi-
cle .
Emergency spare wheel349
Wheels and tires
Z
Information regarding technical data
i
The dat astate dher especifically refers to a
vehicl ewit hstandard equipment. Consult an
authorize dMercedes-Ben zCente rfor th e
dat afor all vehicl evariants and trim levels.
Vehicle electronics
Installing two-way radios and mobile
phones (RF transmitters)
GWARNIN G
The electromagneti cradiation from modifie d
or incorrectl yretrofitte dRF-transmitters can
interfere wit hth evehicl eelectronics .This can
compromise th eoperational safet yof th e
vehicle. Ther eis aris kof an accident.
You should hav eall wor kto electrical and
electronic equipmen tcarried out at aqualified
specialist workshop.
GWARNIN G
The electromagneti cradiation from incor-
rectl yoperate dRF transmitters can interfere
wit hth evehicl eelectronics ,for example:
Rif th eRF transmitte ris no tconnecte dwit h
an exterio rantenna
Rth eexterio rantenna has been installed
incorrectl yor is no t alow-reflection typ e
This can compromise th eoperational safet y
of th evehicle. Ther eis aris kof an accident.
Hav eth elow-reflection exterio rantenna
mounte dat aqualified specialist workshop.
When operating RF transmitters in th evehi-
cle ,always connec tthem wit hth elow-reflec -
tion exterio rantenna.
!The operating permit may be invalidated if
th einstruction sfor installation and use of RF
transmitters are no tobserved. In particular, th
efollowin gcondition smust be
complied with:
Ronly approve dwavebands may be used.
Robserv eth emaximum permissible output
in these wavebands.
Ronly approve dantenna position smay be
used.
Excessiv elevels of electromagneti cradiation
may caus edamag eto your healt hand th ehealt h
of others. Using an exterio rantenna takes int o
accoun tcurren tscientific discussion srelating
to th epossible healt hhazards that may result
from electro
magneti
cfields.
The followin gantenna position smay be used if
RF transmitters hav ebeen properly installed:
Approved antenna position s
:
Rear roo farea
;Rear fender
iOn th erear fenders, it is recommended to
position th eantenna on th eside of th evehicl e
closes tto th ecenter of th eroad .
Use th eTechnical Specification ISO/TS 2160 9
when retrofitting RF transmitters (Road Vehicles
- EM Cguidelines for installation of aftermarket
radi ofrequency transmitting equipment) .
Observ eth elegal requirements for accessory
parts.
If your vehicl ehas installation sfor two-way radi o
equipment, use th epower suppl yor antenna
connection sintended for use wit hth ebasic wir-
ing .Be sur eto observ eth emanufacturer' sSup -
plemen twhen installing.
Deviation swit hrespec tto frequency bands,
maximum transmission output sor antenna
position smust be approve dby Mercedes-Benz.
350Vehicle electronics
Technical data