2020 MERCEDES-BENZ SLC tire size

Optionally
,tires with amaximum speedofover
149 mph (240km/h )mayhave "ZR"int he
size description, dependingonthe manufac-
turer (e.g.245/4 0ZR1 8).
Rim diameter: rimdiameter 0085isthe diame-
ter ofthe bead seat,notthediameter ofthe
rim flange. Therimdiameter isspecified in
inches (in).
Load-bearing index:load-bea ringindex 0083is
an umerical codethatspecifies themaximum
load-bea ringcapacity ofat ire.
Do not overload thetires byexceeding the
specified loadlimit. Themaximum permissible
load canbefound onthe vehicle's Tireand
Loading Information placardonthe B-pillar on
the driver's side(Ypage 280).
Example:
Load-bearing index91indicates amaximum
load of1,356 lb(61 5kg)that thetires can
bear. Forfurther information onthe maximum
tire load inkilograms andlbs,see
(Y page 286).
For further information onthe load bearing
index, see"Load index" (Ypage 286).
Speed rating: speedrating0084specifies the
approved maximum speedofthe tire.
i Tire
data isvehicle-specific andmay devi-
ate from thedata inthe example.
Rega rdless ofthe speed rating, alwaysobserve
the speed limits. Drivecarefully andadap t
your driving 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) Summer
tires Index Speed
rating ZR...(..Y) over
186mph (300km/h ) ZR over
149mph (240km/h ) R
Optionally ,tires with amaximum speedof
over 149mph (240 km/h) mayhave "ZR"in
the size description, dependingonthe man-
ufacturer (e.g.245/4 0ZR18 ).
The service specification ismade upofload-
bearing index0083and speed rating0084.
R Ifthe size description ofyour tireincludes
"ZR "and there arenoservice specifications,
ask thetire manufacturer inorder tofind
out themaximum speed.
If as ervice specification isavail able, the
maximum speedislimited according tothe
speed ratinginthe service specification.
Example: 245/40ZR18 97Y.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 all tires withmaxi-
mum speed sofover 186 mph (300 km/h)
must include "ZR",and theservice specifi-
cation mustbegiven inparentheses .Exam-
ple: 275/40 ZR18 (99 Y).S peed rating "(Y)"
indicates thatthemaximum speedofthe
tire isover 186mph (300 km/h). Askthe
tire manufacture rabou tthe maximum
speed . All
-
weather
tires
and win-
ter tires Index Speed
rating QM
+S1 up
to100 mph (160 km/h) TM
+S1 up
to118 mph (190 km/h) HM
+S1 up
to130 mph (210 km/h) VM
+S1 up
to149 mph (240 km/h) 1
Or M+S 004D forwinter tires. Al
la bout wheelsand tires
285Wheelsand tires Z

The
TINismade upofmanufact ureridentific a-
tion code 0044,tiresize 0087,t iretype code 0085
and manufact uringdate0083.
DOT (Departm entofTra nsport ation): tire
symbol 0043marks thatthetire complies with
the requirement softhe 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 293).
Tire size: identifier 0087describes thetire size.
Tire typecode: tiretype code 0085can beused
by the manufact urerasac ode 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 "3214"was
manufact uredinweek 32in2014 .
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 of1b ar.
DOT (Departm entofTransport ation)
DOT- marked tiresfulfill therequirement sof
the USD epartm entofTransport ation.
Norm aloccupant weight
The number ofoccupant sfor which thevehicle
is designed multiplied by68 kilograms
(150 lbs).
Uniform TireQuality Grading Stand ards
Au niform 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.
Recommended tirepressur es
The recomm endedtirepressure appliestothe
tires mounted atthe factor y.
The Tire andLoading Information placard con-
tains therecomm endedtirepressures forcold
tires onafully loaded vehicle andforthe maxi-
mum permissible vehiclespeed.
The tirepressure tablecontains therecom-
mended pressures forcold tires forvarious
operating conditions,i.e.differing loadand
speed conditions.
Increased vehicleweightduetooptional
equipm ent
The combined weightofall standard and
optional equipment availablefor the vehicle,
regardless ofwhether itis actually installed on
the vehicle ornot . All
about wheelsand tires
287Wheels andtires Z

Tread
The partof the tire thatcome sinto conta ct
wi th the road.
Bead The tirebead ensu resthatthe tire sits
sec urelyo nthe wheel.The reares evera lstee l
wi res inthe bead topre vent thetire from com-
ing loose from thewheelrim .
Si dew all
The partof the tire betwe enthe trea dand the
be ad.
Wei ght ofopti onalextras
The comb inedw eigh to fthos eoptional extra s
tha tweigh mor ethant he rep laced standa rd
pa rts and morethan2 .3kg (5lbs).T he se
op tio nal extra s,su ch ashigh-p erform ance
bra kes, level contro l,ar oofrac ko ra high-p er-
form ance battery ,are not included inthe curb
we ight and theweight ofthe acce ssories.
TIN (Tire Ide ntificatio nNumbe r)
Thi sisa uniqueide nti fierw hich can beused
by atire manuf actu rertoidenti fytire s,for
exa mpl efor ap rodu ct reca ll,a nd thu side nti fy
the purcha sers.The TINisma de up ofthe
ma nuf actu rer'sidenti tycod e,tire size, tire
typ ecodea nd the manuf actu ring date.
Lo ad bearin gind ex
The load bearing index(alsol oa dind ex) isa
cod ethatc onta insthe maximu mloadb earing
cap acityof at ire.
Tracti on
Tra ctio nist he res ulto ffrictio nbetwe en the
tire sand the roadsurface.
Treadw earindic ators
Na rro wb ars( tre ad wearbars) thatare distri b-
ute doverthe tire trea d.Ifthe tire trea dislev el
wi th the bars, the wearlimit of00CD in(1.6 mm)
ha sb eenr eache d.
Oc cupant distrib utio n
The distri butio no foccu pants inav ehiclea t
thei rdesigna ted seating positio ns.
Total load limit
Nom inalloa da nd lugga geload plus 68 kg
(15 0lbs)m ultipl iedb ythe num bero fseats in
the vehicle. Ch
ang ingaw heel Fl
at tire
The "Breakdo wnassista nce" section
(Y page 253 )conta insinfo rma tiona nd note s
on how todealwith aflatt ire .Info rma tiono n
dri ving with MOExte ndedtiresint he eve ntofa
fla ttire can befou ndund er"M OExtend edtire s
(ti res with run-fla tcharacteri stics"
(Y page 254 ). Rotati
ngthe wheels G
WA
RNING
Ro tati ngthe fron tand rea rwheelsi fthe
wh eelsor tire shaved iffe rent dimens ions
ma ysevere lyimp airt he driving characteri s-
tics .The ser viceb rake orwh eelsus pe nsi on
comp onents mayalsob edamaged .The re is
ar isko fana ccident.
Ro tate frontand rea rwheelso nlyi fthe
wh eelsand tiresareofthe same dimen-
si ons.
! On
veh icles equipp ed with atire pre ssu re
moni tor,electro niccomp onents arel oc ate d
in the wheel.
Ti re-m ounting toolsshouldn otbe used nea r
the valve .Thisc ouldda ma gethe electro nic
comp onents.
Onl yhavet iresc hange dataq ualifi ed spe -
cia list wo rksh op.
Alw aysp ayatte ntiontot he instructio nsand
sa fety note swhenc hangi ng aw heel
( Y pa ge 290 ).
The wearpatterns onthe fron tand rea rtire s
di ffe r,de pendi ng on the opera ting cond itions.
Ro tate thewheelsbe fore aclear we arpattern
ha sform edon the tires.Front tirestypica lly
we armor eonthe sho ulde ra nd rea rtire sin
the cente r.
On veh icles tha thavet he same size front and
rea rwheels, yo uc an rota tethe wheelsacco rd-
ing tothe intervalsin the tire manuf actu rer's
wa rranty book inyour veh icled ocum ents. Ifno
wa rranty book isavaila bl e, the tiresshouldb e
rota tedevery3,0 00 to6,0 00 miles(5,000 to
10, 000 km).Dep endingontire wear,thism ay
be req uired earlier. Do not change thedirec-
tio no fwheelrota tion. Ch
ang ingaw heel
289Whe elsa nd tire s Z

These
tireshave been specially adaptedfor
use with thecont rolsystems, suchasABS
or ESP ®
,a nd are marked asfollows:
R MO =Mercedes- BenzOriginal
R MOE =Mercedes- BenzOriginal Extended
(tires featuring run-flatcharact eristics)
R MO1 =Mercedes- BenzOriginal (onlycer-
tain AMG tires)
Mercedes- BenzOriginal Extended tiresmay
only beused onwheels thathave been spe-
cifically approved byMercedes- Benz.
Only usetires, wheels oraccessories tested
and approved byMercedes- Benz.Certain
charact eristics, e.g.handling, vehiclenoise
emissions orfuel consumpt ion,may other-
wise beadversely affected.Inaddition,
when driving withaload, tiredimension var-
iations couldcause thetires tocome into
cont actwith thebodywork andaxle compo-
nent s.This could result indamage tothe
tires orthe vehicle.
Mercedes- Benzaccepts noliabil ityfor dam-
age resulting fromtheuse oftires, wheels
or accessories otherthanthose testedand
approved.
Infor mation ontires, wheels andapproved
combinat ionscanbeobtained fromany
qualified specialist workshop.
! Retreaded
tiresareneither testednor rec-
ommended byMercedes- Benz,since previ-
ous damage cannotalway sbed etect edon
retreaded tires.Asaresult, Mercedes- Benz
cann otguarantee vehiclesafetyifretreaded
tires aremounted. Donot mount usedtires
if you have noinform ationabout theirprevi-
ous usage.
The recomm endedpressures forvarious oper-
ating condit ionscanbefound:
R on the Tire andLoading Information placard
on the B-pillar onthe driver's side
R in the tire pressure tableonthe fuel filler
flap
Observe thenoteson recomm endedtirepres-
sures under various operating conditions
(Y page 271).
Check tirepressures regularly,andonly when
the tires arecold. Comply withthemainte-
nanc erecomm endations ofthe tire manufac-
turer inthe vehicle document wallet. Notes
onthe vehicle equipment –alway s
equip thevehicle:
R with tires ofthe same sizeonagiven axle
(left andright)
R with thesame typeoftires atag iven time
(summer tires,winter tires,MOEx tended
tires)
Exc eption: itis permissible tomount adif-
ferent typeormake inthe event ofaflat
tire. Observe the"MOExt endedtires(tires
with run-flatcharact eristics)" section
(Y page 254).
Vehicles equipped withMOEx tended tiresare
not equipped withaTIREFIT kitatthe factor y.
It is therefor erecomm endedthatyouaddition-
ally equip yourvehicle withaTIREFIT kitifyou
mount tiresthatdonot feature run-flatcharac-
terist ics,e.g. winter tires.ATIREFIT kitmay be
obtained fromaqualified specialist workshop. Emergency
sparewheel Import
antsafety notes G
WARNIN
G
The wheel ortire size aswell asthe tire type
of the spare wheel oremergenc yspare
wheel andthewheel tobe replaced maydif-
fer. Mountin gane mergenc yspare wheel
may severely impairthedriving charact eris-
tics. There isar isk ofan accident .
To avoid hazardous situations:
R adapt yourdriving styleaccording lyand
drive carefully.
R never mount morethanonespare wheel
or emergenc yspare wheel thatdiffers in
size.
R only useaspare wheel oremergenc y
spare wheel ofad ifferent sizebriefly.
R do not switch ESP®
off.
R have aspare wheel oremergenc yspare
wheel ofad ifferent sizereplaced atthe
nearest qualified specialist workshop.
Observe thatthewheel andtiredimen-
sions aswell asthe tire type must becor-
rect . 294
Emergency
sparewheelWheels andtires

When
usinganemergen cyspare wheel or
spare wheel ofad ifferen tsize, you must not
exceed themaximum speedof50 mph
(80 km/ h).
Sno wchains mustnotbemount edon emer-
gency sparewheels. General
notes
You canaskforinform ationregarding permit-
ted emergen cyspare wheels atan authorized
Mercedes- BenzCenter .
You should regularly checkthepressure ofthe
emergen cyspare wheel, particularly priorto
long trips, andcorrectthe pressure asneces -
sary (Ypage 271). Thevalue onthe wheel is
valid.
An emergen cyspare wheel mayalsobemoun-
ted against thedirect ionofrotat ion.Observe
the time restriction onuse aswell asthe
speed limitation specifiedonthe emergen cy
spare wheel.
Replace thetires after sixyears atthe latest,
regardless ofwear. Thisalso applies tothe
emergen cyspare wheel.
When youaredriving withthecollapsible
spare wheel mounted,the tire pressure loss
warning systemorthe tire pressure monitor
cann otfunct ionreliably. Onlyrestart thetire
pressure losswarning systemortire pressure
monit orwhen thedefect ivewheel hasbeen
replaced withanew wheel.
Vehicles withtirepressu remonitor :after
mount inganemergen cyspare wheel, thesys-
tem may stilldisplay thetire pressure ofthe
removed wheelforafew minutes .The value
displayed forthe mount edemergen cyspare
wheel isnot thesame asthe curren ttire pres-
sure ofthe emergen cyspare wheel. Removing
theemergency spare
wheel
Vehicles withacollapsible spare
wheel The
collapsible sparewheel canbefound in
the stowage wellunder thetrun kfloor
(Y page 228). X
Turn retainin gscrew 0044count er-clockwise
and remove it.
X Remove collapsible sparewheel 0043.
Always observe theinstruction sand safety
not esinthe "Mountin gawheel" section
(Y page 290). Stowing
theemergency sparewheel
! Only
place thecollapsible sparewheel in
the vehicle whenitis dry. Other wise, mois-
ture may getinto thevehicle.
Take thefollowing stepstostow aused col-
lapsible sparewheel. Otherwise, thecollapsi-
ble spare wheel willnotfitinthe trun kint he
inten dedmann er.Mercedes- Benzrecom-
mends thatyouhave thiswork carried outata
qualified specialist workshop.
X Unsc rewthevalve capfrom thevalve.
X Ifpossible, unscrewthe valve insert from
the valve andrelease theair.
Fully deflating thetires cantake afew
minutes .
X Scr ew the valve insert backintothevalve.
X Scr ew the valve capback on.
X Pull theprotec tivesheet provided withthe
spare wheel overthecollapsible spare
wheel.
X Stow the collapsible sparewheel inthe
emergen cyspare wheel wellunder the
trun k.
X Use theretainin gscrew topierce thepro-
tect ivesheet andfasten thecollapsible
spare wheel inplace. Emergency
sparewheel
295Wheels andtires Z