2020 MERCEDES-BENZ GLA SUV tires

If
"LT" precedes thesize descriptio n:these are
light truck tiresaccording toU.S. manufactur-
ing standards.
If "T" precedes thesize descriptio n:compact
emergency wheelswith high tirepressu rethat
are only desig nedfortemporary useinan
emergency.
Tire width: tirewidth0043 shows thenominal
tire widthinmill imeters.
Aspec tratio: aspectratio 0044isthe size ratio
betwee nthe tire height andtirewidthand is
shown inpercent. Theaspe ctratio iscalcul a-
ted bydivid ingthe tire widthby the tire height.
Tire code :tire code 0087specifie sthe tire type.
"R" represents radialtires; "D"represents
dia gonal tires;"B"represents diagonal radial
tires.
Optional ly,tires withamaximum speedofover
149 mph (240 km/h )may have "ZR"in the
size descriptio n,dependi ngon the manufac-
turer (e.g.245/40 ZR18) .
Rim diameter: rimdiameter 0085isthe diame-
ter ofthe bead seat,notthediameter ofthe
rim flange. Therimdiameter isspecifie din
inches (in).
Load-be aringindex: load-bearing index0083is
a numerical codethatspecifie sthe maximum
load -bearing capacityof atire.
Do not overloa dthe tires byexceeding the
specifie dload limit.The maximum permissible
load canbefound onthe vehicle 'sTire and
Loadi ngInformation placard onthe B-pilla ron
the driver's side(Ypage 317).
Example:
Load-be aringindex 91indicates amaximum
load of1,356 lb(615 kg)that thetires can
bear. Forfurther information onthe maximum
tire load inkilogra msand lbs,see
(Y page 323).
For further information onthe load beari ng
index, see"Loa dindex" (Ypage 323).
Speed rating: speedrating0084specifie sthe
appro vedmaximum speedofthe tire.
i Tire
data isvehicle -specific andmay devi-
ate from thedata inthe example .
Rega rdless ofthe speed rating, always observe
the speed limits.Drive careful lyand adapt
you rdriving styletothe traffic conditions. Summer
tires Index Speed
rating Q up
to100 mph (160 km/h) R up
to106 mph (170 km/h) S up
to112 mph (180 km/h) T up
to118 mph (190 km/h) H up
to130 mph (210 km/h) V up
to149 mph (240 km/h) W up
to168 mph (270 km/h) Y up
to186 mph (300 km/h) ZR...Y up
to186 mph (300 km/h) ZR...(..Y) over
186mph (300 km/h ) ZR over
149mph (240 km/h ) R
Optional ly,tires withamaximum speedof
over 149mph (240 km/h) mayhave "ZR"in
the size descriptio n,dependi ngon the man-
ufacturer (e.g.245/40 ZR18).
The service specifica tionismade upofload -
beari ngindex 0083and speed rating0084.
R Ifthe size descriptio nof you rtire include s
"ZR "and there arenoservice specifica tions,
ask thetire manufacture rin order tofind
out themaximum speed.
If aservice specifica tionisavai lable,the
maximum speedislimi ted according tothe
speed ratinginthe service specifica tion.
Example: 245/40ZR1897Y.Inthis exam-
ple, "97Y"isthe service specifica tion.The
letter "Y"represents thespeed rating. The
maximum speedofthe tire islimi ted to
186 mph (300 km/h).
R The size descriptio nfor alltires withmaxi-
mum speed sof over 186mph (300 km/h)
must include "ZR"and theservice specifica -
tion must begiven inparentheses .Example:
275/40 ZR18 (99 Y).Speed rating"(Y)"
indicates thatthemaximum speedofthe
tire isover 186mph (300 km/h). Askthe
tire manufacture rabou tthe maximum
speed . 322
Al
labout wheelsand tiresWheel sand tires

All-wea
ther tires and wint ertires Inde
x Sp
eed ratin g Q
M+S 1 up
to100mph (160km /h) T
M+S 1 up
to118mph (190km /h) H
M+S 1 up
to130mph (210km /h) V
M+S 1 up
to149mph (240km /h) i
Not
alltires wit hth eM+S markingpro vide
th edriv ingcharac teris tic sof wint ertires. In
addit iontotheM+S marking,wint ertires
also have the004D snowfl ake symb olon the
tir ewall. Tireswit hth is mar kingfulf illthe
req uirem ents of theRubber Manufacturers
As soc iation (RMA )and theRubber Assoc ia-
tio nof Canad a(RAC) regardin gth etir etrac-
tio non snow. They have been especially
dev elope dfor driv ingonsnow.
An elec tron icspee dlimit erpre ven tsyour vehi-
cle from excee dingaspee dof 13 0mph
(21 0km /h).
The spee drat ing oftires moun tedat thefac -
to ry may behigh erthan themax imum speed
th at theelec tron icspee dlimit erper mits.
Mak esure that your tires have thereq uired
spee drat ing ,e.g .when buyingne wtires. The
req uired speedrat ing foryour vehicle can be
foun din the"Tire s"sec tion(Y page 330).
Fur ther inform ationabout readingtiredat a
can beobt aine dfrom any qualif iedspec ialist
work shop.
Load index In
addit iontotheload- bearingindex,load
ind ex0043 may beimpr inted afterthelet ters th
at iden tifyspee drat ing onthesidew allof
th etir e. Spe edrating (Ypage 321).
R Ifno spec ificatio nis give n:no text (as inthe
ex ample above),rep resents ast and ard load
(SL )tir e
R XL orExtra Load :rep resents arein forced
tir e
R Ligh tLoad :rep resents alight loadtire
R C, D, E:rep resents aload rangethat
depen dson themax imum loadthat thetir e
can carryat acer tain pressur e
i Tire
datais veh icle-spec ificand may devi-
ate from thedat ain theex ample .
Ma xim um load ratin g Max
imum tireload 0043isthemax imum permis -
sible weigh tfor whic hth etir eis appr oved.
Do notove rload thetir es by excee dingth e
spec ifiedload limit.The maximum permis sible
load canbefoun don theveh icle'sTire and
Load ingInfor mat ionplac ardontheB- pillar on
th edriv er'sside (Ypage 317).
i The
actual values fortires are vehicle-spe-
cif icand may deviate from thevalues inthe
illust ration .
DOT, TireIdent ification Numb er(TIN ) US
tirereg ulati onsst ipulat eth at eve rytire
man ufactureror ret read ermust imprintaTIN
in or on thesidew allofeach tirepro duce d.
1 Or M+S 004D forwint ertires. All
abou twheels andtires
323Wheels andtires Z

The
TINisaunique identific ationnumber. The
TIN enables thetire manufact urersorretread-
ers toinform purchasers ofrecalls andother
safety-relevan tmatter s.Itmakes itpossible
for the purchaser toeasily identify theaffect ed
tires.
The TINismade upofmanufact ureridentific a-
tion code 0044,tire size 0087,tire type code 0085
and manufact uringdate0083.
DOT (Departm entofTra nsport ation): tire
symbol 0043marks thatthetire complies with
the requirement sof the U.S. Departm entof
Transport ation.
Manufa ctureridentification code:manufac-
turer identific ationcode0044provides detailson
the tire manufact urer.Newtireshave acode
with twosymbols. Retreaded tireshave acode
with foursymbols.
For further informationabout retreaded tires,
see (Ypage 330).
Tire size: identifier 0087describes thetire size.
Tire typecode: tiretype code 0085can beused
by the manufact urerasacode todescribe
specific characteristics ofthe tire.
Date ofmanu factur e:date ofmanufact ure
0083 provides informationabout theage ofa
tire. Thefirst andsecond positions represent
the week ofmanufact ure,start ingwith "01"
for the first calendar week.Positions threeand
four represent theyear ofmanufact ure.For
example, atire that ismarked with"3208",
was manufact uredinweek 32in2008 .
i Tire
data isvehicle-spec ificand may devi-
ate from thedata inthe example. Tire
chara cteristics This
inform ationdescribes thetype oftire cord
and thenumber oflayers insidewall 0043and
under tiretread 0044.
i Tire
data isvehicle-spec ificand may devi-
ate from thedata inthe example.
Definition ofterm sfor tires andload-
ing Tire
plycomposition andmaterial used
Descr ibesthenumber ofplies orthe number
of layers ofrubber-coat edfabric inthe tire
tread andsidewall .These aremade ofsteel,
nylon, polyester andother materials.
Bar
Metric unitfortire pressure. 14.5038pounds
per square inch(psi) and100 kilopascals (kPa)
are the equivalent of1bar.
DOT (Departm entofTransport ation)
DOT- marked tiresfulfill therequirement sof
the USDepartm entofTransport ation.
Norm aloccupant weight
The number ofoccupant sfor which thevehicle
is designed multiplied by68 kilograms
(150 lbs).
Uniform TireQuality Grading Stand ards
A uniform standard tograde thequality oftires
with regards totread quality, tiretract ionand
temperat urecharact eristics. Thequality grad-
ing assessment ismade bythe manufact urer
following specification sfrom theU.S. govern-
ment .The ratings aremolded intothesidewall
of the tire. 324
All
about wheelsand tiresWheels andtires

Rec
omme ndedtire press ures
The reco mmend edtire pressu reappliesto the
tire smou nted atthe facto ry.
The Tireand Loading Inform ation placa rdcon-
tai ns the reco mmend edtire pressu res forcold
tire son aful lyloa ded vehicleand forthe maxi -
mum permis siblevehi clespe ed.
The tirepressu retab lecontai nsthe reco m-
mend edpre ssu res forcoldtire sfor various
ope ratingcondi tions,i.e .di fferi ngloadand
spe edcondi tions.
In cre ase dveh icle we ight due toopti onal
equi pment
The comb inedweigh tof allstand ardand
opti onalequ ipment availab lefor the vehi cle,
reg ard less ofwhe ther itis actu ally insta lled on
the vehi cleornot.
Rim
Thi sis the partof the whe elon whi chthe tire
is mou nted.
GAW R(Gro ssAxleWei ght Ratin g)
The GAW Ris the maxi mum grossaxl ewe igh t
rati ng. The actu alloa don anaxlemus tneve r
excee dthe gros saxl ewe igh trati ng. The gros s
axl ewe igh trati ngcan befou ndonthe vehi cle
id entif ication plate onthe B-pi llar on the driv-
er's side.
Spe edrating
The speedrati ngispa rtof the tire identif ica-
tion. Itspe cifiesthe speedrang efor whi chthe
tire isap pro ved .
GVW (GrossVehi cle Wei ght)
The gros svehi cleweigh tincl udes the weigh t
of the vehi cleincluding fuel,tool s,the spare
whe el,acce ssoriesinsta lled, occu pants, lug-
ga ge and thedrawbarnose weigh t,ifap plica -
bl e. The gros svehi cleweigh tmus tnot excee d
the gros svehi cleweigh trati ngGVW Ras spe ci-
fie don the vehi cleidentif ication plate onthe
B-pi llar on the driver' ssid e.
GVWR (GrossVehi cle Wei ght Ratin g)
The GVW Ris the maxi mum permis siblegros s
we igh tof aful lyloa ded vehicle(the weigh tof
the vehi cleincluding allacce ssories,occu -
pa nts, fuel,lu gga geand thedrawbarnose -
we igh t,ifap plica ble). The gros svehi cleweigh t
rati ngisspe cified on the vehi cleidentif ication
pl ate onthe B-pi llar on the driver' ssid e. Maxi
mum loaded vehicle we ight
The maxi mum weigh tis the sum of:
R the curb weigh tof the vehi cle
R the weigh tof the acce ssories
R the loadlimit
R the weigh tof the facto ryinsta lled opti onal
equ ipment
Ki lopasc al(kP a)
Metri cuni tfor tire pressu re.6.9 kPa corre -
spo nds to1psi .Another unitfor tire pressu re
is ba r.100 kilopa scals(kPa )are the equivalent
of 1ba r.
Lo ad index
In addition tothe load-be aring index, the load
ind exmay also be imp rinte don the sidewallof
the tire.Thi sspe cifiesthe load-be aring cap a-
city more precise ly.
Curb weight
The weigh tof avehi clewith stand ardequip-
ment including the maxi mum capacityof fue l,
oil and coolant. Italso incl udes the air-condi -
tioni ngsystem andoptionalequ ipment ifthes e
are insta lled inthe vehi cle,bu tdoe snot
incl udepa sse ngers orlugga ge.
Maxi mum load rating
The maxi mum tireloadis the maxi mum per-
mis siblewe igh tin kilogra msorlbsfor whi cha
tire isap pro ved .
Maxi mum permis sibl etire press ure
Ma ximu mper mis sibletire pressu refor one
tire .
Maxi mum load on onetire
Ma ximu mloa don one tire.Thi sis cal cul ate d
by divid ing the maxi mum axleloa dof one axle
by two.
PSI (pounds persquare inch)
A stand ardunitof mea sure for tire pressu re.
As pec tratio
Re lations hipbetw eentireheight and tirewidth
in per cent.
Tire press ure
Thi sis pre ssu reinsi dethe tire applying anout-
wa rdforce toeach squ are inch ofthe tire's
su rfa ce. The tirepressu reisspe cified in Al
labo utwh eelsand tires
325Wheelsand tires Z

pounds
persquare inch(psi), inkilopascal
(kPa) orinbar. Thetirepressure shouldonly
be corr ectedwhen thetires arecold.
Cold tirepr essure
The tires arecold:
R ifthe vehicle hasbeen parked withthetires
out ofdirect sunlight foratleast three hours
and
R ifthe vehicle hasnotbeen driven further
than 1mile (1.6km)
Tr ead
The part ofthe tire that comes intocon tact
with theroad.
Bead The tirebead ensures thatthetire sits
securely onthe wheel. Thereareseveral steel
wires inthe bead topreven tthe tire from com-
ing loose fromthewheel rim.
Sidewall The part ofthe tire between thetread andthe
bead.
Weight ofoptiona lextr as
The combin edweight ofthose option alext ras
that weigh morethanthereplaced standard
parts andmore than2.3kg(5lbs). These
option alext ras, such ashigh-per formance
brakes, levelcontrol, aroof rack orahigh-per -
form ance battery,are not included inthe curb
weight andtheweight ofthe access ories.
TIN (Tire Identificat ionNum ber)
This isaunique identifierwhich canbeused
by atire manufact urertoident ifytires, for
example foraproduct recall,andthus ident ify
the purchasers .The TINismade upofthe
manufact urer'sidentitycode, tiresize, tire
type code andthemanufac turingdate.
Load bearing index
The load bearing index(alsoloadindex )is a
code thatcontains themaximum loadbearing
capacit yof atire.
Tr action
Tract ionisthe result offric tion between the
tires andtheroad surface. Tr
eadwear indicators
Narrow bars(tread wearbars) thataredistrib-
uted overthetire tread. Ifthe tire tread islevel
with thebars, thewear limitof00CD in(1.6 mm)
has been reached.
Occupant distribut ion
The distribut ionofocc upants inavehicle at
their designat edseatin gposition s.
Tota lload limit
Nomin alload andluggage loadplus68kg
(150 lbs)multiplied bythe number ofseats in
the vehicle. Changing
awheel Flat
tire
The "Breakdown assistance"sect ion
(Y page 288)con tains information andnotes
on how todeal with aflat tire. Informat ionon
driving withMOEx tended tires inthe event ofa
flat tire can befound under "MOEx tended tires
(tires withrun-flatcharact eristics"
(Y page 289). Rota
tingthewheels G
WARN
ING
Rotatin gthe fron tand rear wheels ifthe
wheels ortires have differen tdimension s
may severely impairthedriving charact eris-
tics .The servic ebrake orwheel suspension
compon entsmay alsobedamaged. Thereis
a risk ofan acciden t.
Rotate frontand rear wheels onlyifthe
wheels andtires areofthe same dimen-
sions.
! On
vehicles equipped withatire pressure
monit or,elect ronic compon entsare located
in the wheel.
Tire-m ountin gtools should notbeused near
the valve. Thiscould damage theelect ronic
compon ents.
Only have tireschang edataqualified spe-
cialist worksh op.
Observe theinstruct ions andsafety notesin
the "Changing awheel" section(Ypage 326). 326
Changing
awheelWheels andtires

The
wear pattern son the front andrear tires
differ, depending onthe operating conditions.
Rotate thewheels beforeaclear wearpattern
has formed onthe tires. Fronttires typically
wear more onthe shoulders andtherear tires
in the cent er.
On vehicles thathave thesame sizefront and
rear wheels, youcan rotat ethe wheels accord-
ing tothe inter valsinthe tire manufact urer's
warranty bookinyour vehicle document s.Ifno
warranty bookisavailabl e,the tires should be
rotat edevery 3,000 to6,000 miles(5,000 to
10,00 0km). Dependin gon tire wear, thismay
be required earlier.Donot change thedirec-
tion ofwheel rotation.
Clean thecont actsurfaces ofthe wheel and
the brake discthoroughly everytimeawheel
is rotat ed.Check thetire pressure and,ifnec-
essary, restartthetire pressure losswarning
system (Canada only)orthe tire pressure
monit or(USA only). Direction
ofrota tion
Tires withaspecified directionofrotat ionhave
additional benefits,e.g. ifthere isarisk of
hydroplaning. Theseadvantages canonly be
gained ifthe tires areinstalled correspon ding
to the direction ofrotat ion.
An arrow onthe sidewall ofthe tire indicates
its correc tdirection ofrotat ion. Storing
wheels
Stor ewheels thatarenot being usedinacool,
dry and preferably darkplace. Protectthe tires
from oil,grease, gasoline anddiesel. Mounting
awheel
Prepa ringthevehicle X
Stop thevehicle onsolid, non-slippery and
level ground.
X Apply theelectric parking brakemanually.
X Bring thefront wheels intothestraight-
ahead position.
X Shift thetrans mission toposition 005D.
X Switch offthe engine. X
Vehicles withoutKEYLESS-GO: remove
the Smart Keyfrom theignition lock.
X Vehicles
withKEYL ESS-GO start-func-
tion orKEYL ESS-GO: openthedriver's
door.
The vehicle electron icsare now inposition
0092. This isthe same as“key removed”.
X Vehicles
withKEYL ESS-GO start-func-
tion orKEYL ESS-GO: removetheStart /
Stop button fromtheignition lock
(Y page 125).
X Make surethattheengine cannotbe start ed
via your smartphon e(Y page 84).
X Ifincluded inthe vehicle equipment, remove
the tire- change toolkitfrom thevehicle.
X Safeguard thevehicle against rollingaway
(Y page 145).
i Apart
fromcertaincount ry-specific varia-
tions, thevehicles arenot equipped witha
tire- change toolkit.Some toolsforchanging
a wheel arespecific tothe vehicle. Formore
inform ationonwhich toolsarerequired to
perform awheel change onyour vehicle,
consult aqualified specialist workshop.
Necessary tire-changing toolscaninclude,
for example:
R Jack
R Wheel chock
R Lug wrench
Securing thevehicle toprevent itfrom
rolling away If
your vehicle isequipped withawheel chock,
it can befound inthe tire- change toolkit
(Y page 288).
The folding wheelchock isan additional safety
measure toprevent thevehicle fromrolling
away ,for example whenchanging awheel. Changing
awheel
327Wheels andtires Z

X
Fold both plates up0043.
X Fold outlow erpla te0044.
X Gu ide the lugs on the lowerpla tefullyinto
the openings inba se pla te0087. X
Pla cechocks orother suitabl eitems under
the front andrearof the whe elthat isdia go-
nal lyopp ositethe whe elyouwi sh to
chang e.
Raisi ngthe vehicle G
WARNI
NG
If yo udo not positionthe jack corre ctlyat
the approp riate jacking pointofthe vehi cle,
the jack couldtip over with the vehi cle
rai sed .The reisarisk ofinjur y.
Only positionthe jack atthe approp riate
jacking pointofthe vehi cle. The base ofthe
jack mustbe pos itioned verti cally,dir ectly
und erthe jacking pointofthe vehi cle.
! Only
positionthe jack atthe approp riate
jacking pointofthe vehi cle. Otherw ise,yo u
cou ldda mag ethe vehi cle.
Obs erve thefollowi ng whe nraisi ngthe
veh icle :
R To raise the vehi cle, only usethevehi cle-
spe cificjack thathasbeentested and
ap prov edbyMerce des-Benz. Ifuse dincor-
rectly ,the jack couldtip over with the vehi -
cle raised .
R The jack isdes igne donly toraise and hold
the vehi cleforashor ttime whileawhe el
is bei ng chang ed.Itmus tnot beuse dfor
per formi ngmai ntenance workund erthe
vehi cle.
R Avoid changingthe whe elon uphilland
dow nhillslo pes . R
Befor erai sing thevehi cle, secu reitfrom
rol ling away by apply ing the parking brake
and inserting wheelchocks. Donot disen-
ga ge the parking brakewhi lethe vehi cleis
rai sed .
R The jack mustbe placed onafirm, flatand
non-sli psur face .On aloo sesur face ,a large,
fla t,loa d-be aring und erlay mus tbe use d.On
a sli ppe rysur face ,a non-sli pund erlay mus t
be use d,e.g. rubber mats.
R Do not use wooden blocks orsimi larobje cts
as ajack underlay.Otherw ise,the jack will
not beableto achi eveitsload-be aring cap a-
city dueto the restri ctedheight.
R Make surethat thedistance betweenthe
und ersideofthe tires andthegrou nddoe s
not excee d1.2 in(3 cm).
R Neve rpla ceyour hand sand feet underthe
rai sed vehicle.
R Do not lie und erthe vehi cle.
R Do not start theengi newhe nthe vehi cleis
rai sed .
R Neve rope nor clos eadoo ror the tailga te
whe nthe vehi cleisrai sed .
R Make surethat noper sons arepresent in
the vehi clewhe nthe vehi cleisrai sed . X
Usi nglug wre nch 0043,loosen theboltson
the whe elyouwi sh tochang eby abou tone
ful lturn. Donot unscre wthe boltscom-
ple tely . 328
Chan
ging awhe elWhee lsand tires

Jack
ingpoin ts
The jackin gpoin tsare locat edjustbehin dth e
fro ntwheel housin gsand justin fro ntofthe
rear wheel housin gs(arr ows). X
Take ratche twren ch0085 out ofthevehi cle
to ol kit and place iton thehex agon nutof
jac k0087 sothat thelet ter sAUF arevisib le.
X Posit ionjack0087 atjac kin gpoin t0044. X
Mak esure thefoo tof thejac kis direc tly
ben eath thejac kin gpoin t. X
Turn ratche twren ch0085 untiljac k0087 sits
com pletelyonjackin gpoin t0044 and thebase
of thejac klies even lyon thegroun d.
X Turn ratche twren ch0085 untilth etir eis
raise damax imum of1.2in (3 cm )fro mthe
groun d.
Rem oving awheel !
Do
not place wheel boltsin san dor on a
dirt ysurf ace. Thebolt andwheel hub
th reads couldotherwi sebe damage dwhen
you screw them in.
X Un scr ew thewheel bolts.
X Remov eth ewheel.
Moun tinganew wheel G
WAR
NING
Oiled orgreas edwheel boltsor damage d
wheel bolts/hubthreads cancause the
wheel boltsto com eloose .As ares ult, you
could loseawheel whiledriving.Ther eis a
risk ofacc iden t.
Nev eroil orgreas ewheel bolts.In theeven t
of damage totheth reads ,con tacta quali-
fied spec ialist workshop immediat ely.Have
th edamage dwheel boltsor hub threads
replac ed/renewed. Donot continue driv ing. G
WAR
NING
If you tighten thewheel boltsor wheel nuts
when thevehi cleisraise d,thejac kcould tip
over .Ther eis arisk ofinjury.
On lytig hten thewheel boltsor wheel nuts
when thevehi cleison thegroun d.
Always payattent ion totheins truct ionsand
safe tynot esinthe"Chang ingawheel" section
(Y page 326).
On lyuse wheel boltsth at have been designed
for thewheel andthevehi cle. Forsafe tyrea-
son s,Merc edes- Benzrec omm endsth at you
onl yuse wheel boltswhic hhave been
appro vedforMerc edes- Benzvehi cles andthe
res pec tivewheel.
! To
prev entdamage tothepaint work,hold
th ewheel securely agains tth ewheel hub
while screwin gin thefir st wheel bolt. Cha
nging awheel
329Wheels andtires Z