tire size MERCEDES-BENZ C-CLASS CABRIOLET 2019 Owner's Manual

int
ended andcould result inadditional
injur y.
R Objects orloads inthetrunk/ cargocom‐
par tmen tcann otbe restra ined bythe
seat backres t. 0007
Mak esur eth at theseat backres tand
th ere ar ben chseat/r earseat are
eng aged bef oreeve rytrip . If
th ere ar seat backres tis no teng aged and
loc ked, there dloc kve rificati onindi catorwillbe
vis ible.
Whe nins talling abelt- secur edchild restra int
sy stem, obser vethefo llo wing:
0073 Alw
ayscom plywit hth emanuf acturer's
ins tallation andoper atingins truct ions for
th ech ild restra int system used.
0073 When
usingacat egor y0/0+ babycar
seat andacat egor yIre ar wa rd-faci ng
ch ild restra int system onare ar seat :
adju stthefront seat sothat theseat does
no tto uc hth ech ild restra int system. 0073
When
usingacat egor yIfo rw ard-f acin g
ch ild restra int system: remo vethehead
re stra int from there spectiv eseat, ifpossi‐
ble.
Af terre mo ving thech ild restra int system,
re place thehead restra int sag ain immed i‐
at elyand adjus tth em correctly .
0073 The
backrest of thefo rw ard-f acin gch ild
re stra int system mus t,as faras possi ble,be
re sting ontheseat backres tof there ar
seat .
0073 Fo
rcer tain child restra int systems inwe ight
cat egor yII or III,th er ema ybe restrictions in
th emaximum sizesetting, e.g. due topossi‐
ble con tact with thero of.
0073 The
child restra int system mus tno tbe put
under stra in be tween thero of and theseat
cushion and/orbeinstalled facing the
wr ong direct ion. Wher eposs ible, adjus tth e
seat cushion inclination accordingly.
0073 The
child restra int system mus tno tbe put
under stra in by thehead restra int s.Ad jus t
th ehead restra int sacc ording ly. 0073
Mak
esur eth at thech ild's feet do notto uc h
th efront seat. Ifneces sary,mo vethefront
seat forw ardsligh tly.
0009 Beforeope ning orclos ingthesof tto p, child
re stra int systems inwe ight categor iesIIor III
mus tbe remo vedor thehead restra int sof
th ech ild restra int systems mustbe mo ved
to thelowe stposition .In this case, letth e
ch ild getou tbe fore opening orclosing the
sof tto p.
The seat belts onthefo llo wing seats areeq uip‐
ped withaspec ialseat beltretract or:
R Front passeng erseat
R Rear seat s
When enabled,thespecial seatbeltretract or
ens ures that theseat belts ofthefront
passeng erseat andrear seat sdo notslac ken
once thech ild restra int system issecur ed
(0013 page55). 0007
Installth ech ild restra int system.
The entire base ofthech ild restra int system
mus talw aysre st on thesitt ing surface ofthe
re ar seat . Oc
cupan tsaf ety 59

0073
Fo
rcer tain child restra int systems inwe ight
gr oup IIor III,th er ema ybe restrictions in
th emaximum sizesetting, e.g. due topossi‐
ble con tact with thero of.
0073 The
child restra int system mus tno tbe put
under stra in be tween thero of and theseat
cushion and/orbeinstalled facing the
wr ong direct ion. Adjus tth eseat backres t
inclin ation accordingly.
0073 The
child restra int system mus tno tbe put
under stra in by thehead restra int s.Ad jus t
th ehead restra int sacc ording ly.
0073 Ne
verpla ceobjects underorbehi ndthe
ch ild restra int system, e.g.cushions .
The seat beltonthefront passeng erside is
eq uipped withaspecial seatbelt retract or.
Wh enacti vated, thespecial seatbelt retract or
ens ures that theseat beltdoes notslac kenonce
th ech ild restra int system issecur ed
(0013 page55). 0007
Setth efront passeng erseat asfarbac kas
possi bleand movetheseat intoth ehighes t
position . 0007
Fully re tract theseat cushion lengthadjus t‐
ment . 0007
Adjus tth eseat cushion inclination sothat
th efront edgeof theseat cushion isin the
highes tposition andthere ar edg eof the
seat cushion isin thelowe stposition . 0007
Setth eseat backres tto an almos tve rtical
posit ion. 0007
Installth ech ild restra int system.
The entire base ofthech ild restra int system
mus talw aysre st on theseat cushion ofthe
fr ont passeng ersea t. 0007
Alw aysmak esur eth at theshoulder belt
st ra pis cor rectly routed from theseat belt
outle tof theve hicle totheshoulder belt
guide onthech ild restra int system.
The shoulder beltstra pmus tbe routed for‐
wa rdsand down wardsfrom theseat beltout‐
le t. 0007
Ifneces sary,adjus tth eseat beltoutle tand
th efront passeng erseat accor dingly. No
teson pets intheve hicl e 000A
WARNIN GRisk ofacci dent andinjury
due toanim alsleftuns ecur edorunat ‐
te nde din theve hicle
If yo ulea veanim alsintheve hicle unatten‐
ded orunsecur ed,they cou ldpos siblypress
do wn butt ons orswitc hes.
Ther ebyan animal may:
R activ ateve hicle equipment andbecome
tr apped, forex am ple
R swit chsystems onoroffand endang er
ot her road user s
Uns ecur edanimals maybe throw nar ou nd in
th eve hicle intheeve ntofan acci dent or
su dd en steer ing and braking maneuv erand
injur eve hicle occupants inthepr ocess. 0007
Neverlea veanim alsintheve hicle unat‐
te nde d. 0007
Alw ayscor rectly secu reanim alswhile
dr ivin g,forex am ple usin gasuit able
anim alcar rier . Occ
upant safety 61

The
tirepr essur eta ble showsthere comme nded
tir epr ess urefo rall tires app rove dfo rth is vehi‐
cle. The recomme ndedtirepr ess ures apply for
cold tires und ervarious oper ating condit ions,i.e.
loading and/orspeedoftheve hicle.
If one ormor etir esizes precede atir epr essur e,
th etir epr essur einf ormation follo wing isonl y
va lid forth ose tiresizes.
The load condit ions"partially laden" and"fully
laden" aredef ined intheta ble fordif fere nt num ‐
be rs of passeng ersand amounts oflugg age. The
actual number ofseats maydif ferfr om this. Som
etir epr essur eta bles onlysho wtherim
diame terins tead ofthecom pletetiresize, e.g.
R1 8.The rim dia me teris par tof thetir esize and
can befound onthetir eside wall
(0013 page39 4).
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(0013 page380) R
Tire and Loadi ngInfo rm atio nplacar d
(0013 page38 7)
R Max imum tirepr essur e(0013 page39 4) Chec
kingtirepr essu resmanu ally 0007
Read thetir epr essur efo rth ecur rent operat‐
ing cond itions from theTire and Loadi ng
In fo rm atio nplacar dor thetir epr essur e
ta ble. Obser vetheno teson tirepr essur e. 0007
Remo vetheva lve cap ofthetir eto be
ch ecked. 0007
Press thetir epr essur ega ug esec urelyon to
th eva lve. 0007
Read thetir epr essur e. 0007
Ifth etir epr essur eis lowe rth an there com‐
mend edvalue, increase thetir epr essur eto
th ere comme ndedvalue. 0007
Ifth etir epr essur eis higher than there com‐
mend edvalue, release air.To do so, press
do wn theme talpin intheva lve, e.g. using
th etip ofapen forex am ple. Then checkth e
tir epr es su re again usin gth etir epr essur e
ga ug e. 382
Wheelsand tires

0007
Screw theva lve cap ontoth eva lve.
Fu rther relat ed subje cts:
R Noteson tirepr essur e(0013 page380)
R Tire pressur eta ble (0013 page38 1)
R Tire and Loadi ngInfo rm atio nplacar d
(0013 page38 7) Ti
re pres sur emoni toring system Fu
nction ofthetir epr essur emoni toring sys‐
te m 000A
DANG ER Risk ofacc iden tdue toinc or‐
re ct tirepr ess ure
Ev erytir e, incl uding thespar e(if prov ided),
should becheckedwhen coldatleas tonc ea
mont hand inflated tothepr essur ere com‐
mend edbytheve hicle manuf acturer(see
Ti re and Loadi ngInfo rm atio nplacar don the
B-pil laron thedr iver ’s side orthetir epr es‐
sur elabel ontheinside ofthefuel filler flap
of your vehicle). Ifyo ur vehicle hastires ofa
dif fere nt size than thesize indicat edon the Ti
re and Loadi ngInfo rm atio nplacar dor the
tir epressu retable, youne ed todeterm ine
th epr oper tirepr essur efo rth ose tires.
As anadded safetyfe atur e,your vehicle has
been equipped withatir epr essur emonit or‐
ing system (TPMS) that illumin ates alow tire
pr essur eind icat orlam pwhen oneor mor eof
yo ur tires aresign ifican tly und erinf lated.
Ac cor ding ly,if th elow tirepr essur eindicat or
lam plights up,yousho uld stop and check
yo ur tires assoo nas poss ible, andinflate
th em tothepr oper pressur e.Driving ona
signif icantlyunder inflated tirecauses thetir e
to ove rheat and canlead totirefa ilur e.
Und erinf lation alsoincreases fuelconsum p‐
tion andreduces tiretread life, and may
af fect theve hicle's handling andbraking abil‐
ity .Please note that theTPMS isno ta subs ti‐
tut efo rpr oper tiremaint enance, anditis the
dr iver's responsibili tyto maint aincorrect tire
pr ess ure, eve nif und erinf latio nha sno t
re ac hed theleve lto trig ge rill umina tionof
th eTPMS low tirepr essur eindicat orlam p. Yo
ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic atewhen
th esy stem isno toper ating proper ly.The
TPMS malfunct ionindicat oriscombin edwith
th elow tirepr essur eindicat orlam p.When
th esy stem detects amal functi on,theindica‐
to rlamp willfl ash forapp roxima tely amin ute
and then remain continuously illumina ted.
This sequence willcontinue upon subseq uent
ve hicle star t-ups aslon gas themalfunct ion
ex ists.
When themalfunct ionindicat orisillumina‐
te d, thesy stem mayno tbe able todetect or
sig nal low tirepr ess ureas intende d.TPM S
mal functi onsmayoccu rfo ra va riet yof rea‐
son s,inc ludin gth eins tallation ofinc om pati‐
ble replacemen tor alternat etir es orwheels
on theve hicle that preve nttheTPMS from
func tioningproper ly.
Alw aysch eckth eTPMS malfunct ionwarning
lam paf te rre placing oneormor etir es or
wheels onyour vehicle toensur eth at the
re placemen tor alternat etir es and wheels Wheels
andtires 383

Calcu
lation exam ple forde term ining the
ma ximum load The
follo wing table showsexam ples ofhowto
cal cul ateto ta land load capac itieswithva rying seatin
gcon figur ations anddiffere nt num bers
and sizes ofocc upant s.The follo wing exam ples
use amax imum loadof1500 lbs (680 kg).This
is forillus tratio npur pos esonly.Mak esur e
yo uar eusin gth eactual loadlimit foryo ur vehi‐ cle
stat ed on your vehicle's Tire and Loadi ng
In fo rm atio nplacar d(0013 page38 7).
The high erthewe ight ofall theoccupant s,the
smaller themaximum loadforlug gage .
Ste p1 Ex
am ple 1E xamp le2
Combine dmaxim umweight ofocc upant sand
load (datafrom theTire and Loadi ngInfo rm atio n
placar d) 15
00 lbs (680 kg)1 500lbs(680 kg) Ste
p2 Ex
am ple 1E xamp le2
Nu mb erofpeople intheve hicle (driver and
occupants) 51
Dis trib uti on oftheoccupant sF ront:2
Re ar:3 Fr
ont :1 Wheels
andtires 389

Ti
re labeling Ov
ervie wof tirelabeling 1
Uniform Tire Qua lityGradi ng Standar d
(0013 page39 1)
2 DOT,Tire Identif ication Number
(0013 page392)
3 Maximu mtireloa d(0013 page393)
4 Maximu mtirepr essu re(0013 page39 4) 5
Manuf acturer
6 Char acteristics ofthetir e(0013 page39 4)
7 Tire size designation, load-bearing cap acity,
spe edrating andload index
( 0013 page39 4)
8 Tire nam e
0009 The data sho wnintheimag eis exam ple
dat a. Ti
re Quality Grading In
accor dance withth eUS Depar tmentof Trans ‐
por tatio n's "Uni form Tire Qua lityGradi ng Stand‐
ar ds", tireman ufact urersar ere qu ired tograde
th eir tires on thebasis ofthefo llo wing thre eper‐
fo rm anc efa ct or s: 1
Tread weargrade
2 Tract ion grade
3 Temp eratur egr ade
0009 The datasho wnintheimag eis exam ple
dat a.
0009 The classificat ion isno tleg allyst ipulat edfor
Canad a,but itis ge ner ally stat ed.
Tr ead weargrade
The tread weargrade isacom parativ era ting
ba sedon thewe arrate ofthetir ewhen tested
under controlled conditions onaspecif iedtest
tr ac kof theUS Depar tmentof Trans portatio n.
Fo rex am ple, atir egr aded 150wo uld wearone Whee
lsand tires 39
1

0009
The datasho wnintheimag eis exam ple
dat a.
The TINisauniq ueiden tificat ion num berto
ident ifytires and comprises thefo llo wing:
R DOT(Depar tment ofTranspo rtation ):tir e
symb olmar ks1 indic atingth at thetir e
com plies withth ere qu iremen tsof theUS
Depar tmentof Trans portatio n.
R Man ufac tur eride ntificat ion code: manu‐
fa ctur eridentif ication code 2cont ains
de tails ofthetir emanuf acturer.Ne wtires
ha ve acod ewit htw osymbo ls.Retrea de d
tir es have acod ewit hfo ur symb ols.Further inf
ormation onretrea de dtir es
(0013 page 399) .
R Tire size: identif ier3 descr ibesthetir e
size.
R Tire type code: tiretyp ecod e4 can be
us ed bythemanuf actureras acode to
descr ibespecif icch aract eristic sof thetir e.
R Manuf acturingdate:manuf acturingdate
5 prov ides informatio nabout theag eof a
tir e. The 1stand 2nd position sre pr esent the
cal enda rwe ek and the3r dand 4thposition s
st at eth eye ar ofman ufact ure(e. g."32 08"
re pr esent sth e32n dwe ek of2008 ). Inf
ormat iononthema xim um tireload 0009
The datasho wnintheimag eis exam ple
dat a.
Max imum tireload 1isthemaximum permissi‐
ble weight forwhi chthetir eis appr oved.
Do notove rload thetir es by exceed ingthespeci‐
fi ed load limit. Themaximum permissible load
can befound ontheve hicle's Tire and Loadi ng
In fo rm atio nplacar don theB-pillar onthedr iv‐
er's side (0013 page38 7). Wheels
andtires 393

Specif
ications formaxi mum tirepr es sur e 0009
The data sho wnintheimag eis exam ple
dat a.
Ne verexc eed maximum tirepr essur e1 speci‐
fi ed forth etir e. Inf
ormat ionontirech aract eristics 0009
The datasho wnintheimag eis exam ple
dat a.
This informat iondesc ribes thetype oftirecor d
and thenumber oflaye rs inside wall1 and
under tiretread 2. Ti
re size designation, load-bearingcapacity ,
speed ratin gand load inde x 000A
WARNIN GRisk ofinju rythro ugh exceed‐
ing thespecif iedtireload rating orthe
per missible speedrating
Ex cee ding thespecif iedtireload rating or
th eper missible speedrating mayle ad totire
da ma geand tothetir es bur sting. 0007
Ther efor e, onl yuse tiretypes andsizes
appr ovedfo ryo ur vehicle model. 0007
Obser vethetir eload rating andspee d
ra ting requ ired foryo ur vehicle. 39
4
Wheels andtires

fi
ed on theve hicle identif ication plateon the
B‑pil laron thedr iver's side.
Maxim umweight ofthelad envehicl e:the
maximu mwe ight isthesum ofthecurb weight
of theve hicle, thewe ight oftheaccessor ies,the
maximu mloa dand thewe ight ofoption aleq uip‐
men tins talled atthefa ct or y.
Kilop ascal(kP a):metric unit fortir epr essu re.
6.9 kPacor responds to1psi. Another unit for
tir epr es su re isbar .10 0kilop ascal(kP a)equals
1 bar .
Lo ad inde x:inadd ition totheload-bear ing
inde x,theload indexma yalso beimprint ed on
th eside wallof thetir e. This specif iestheload-
bear ingcapacity ofthetir emor epr ecisel y.
Cur bwe ight :th ewe ight ofave hicle withstand‐
ar deq uipme ntinc ludin gth emaximum capacity
of fuel, oiland coolant .It also includes theair
con ditionin gsy stem and option aleq uipment if
th ese areins talled ontheve hicle, butdoes not
include passeng ersor lugg age.
Maximum tireload: themaximum tireload is
th emaximum permissible weight inkilog rams or
lbs forwhi chatir eis appr oved. Maxim
umpermissible tirepr essur e:maxi‐
mum permissible tirepr essur efo rone tire.
Maximum loadonone tire: maximu mloa don
one tire. This iscalcu lated bydividing themaxi‐
mum axleload ofone axle bytwo.
PSI (pounds persquar ein ch ):standar dunit of
meas uremen tfo rtir epr essu re.
Aspe ctratio :ra tio betwee ntire height and tire
wi dthin pe rcent .
Ti re pres sur e:press ureinsi dethetir eappl ying
an outw ardfo rc eto eve rysquar einc hof thetir e.
The tirepr essur eis specif iedinpounds per
sq uar einc h(psi), inkilopascals (kPa)or inbar .
The tirepr essur eshould onlybe cor rected whe n
th etir es arecold.
Cold tirepr essur e:thetir es arecold when the
ve hicle hasbeen parkedfo rat lea st3hou rs
wit hout direct sunli ghtonthetir es ortheve hicle
has been driven forless than 1mile (1.6 km ).
Ti re contact surface: thepar tof thetir eth at
com esintocon tact with thero ad.
Ti re bead: thepur pose ofthetir ebead isto
ensur eth at thetir esits secur elyon thewheel ri
m. Ther ear ese veralwir ecor esinthetir ebead
to preve ntthetir efrom chang inglengthon the
wheel rim.
Side wall:thepar tof thetir ebe tween thetread
and thetir ebead.
We ight ofoptiona leq uipm ent:th ecombin ed
we ight oftheop tion aleq uipment weighin gmor e
th an there placed standar dpar tsand moreth an
5 lbs (2.3kg ).This optional equipment, suchas
high-per form anc ebr ak es, leve lcon trol system, a
ro of lugg agera ck orhigh-per form anc ebat teries,
is no tincluded inthecurb weight andthewe ight
of theaccessor ies.
TIN (Tire Identif ication Numbe r):auni que
ident ificat ion numb erwhic hcan beused bya
tir ema nuf actu rerto ident ifytires, forex am ple,
in apr oduc tre cal l,and thus iden tifyth epur‐
ch aser s.The TINismade upofthemanuf actur‐
er's identit ycode, tiresize, tiretype code and
th emanuf acturingdate.
Load-bear inginde x:theload-bear inginde xis a
code that con tains themaximum load-bearing
capacity ofatir e. 398
Wheels andtires

Tr
actio n:traction isthegr ip resulting from fric‐
tion between thetir es and thero ad sur face.
We arindi cator:nar row bars(tr ead wearbar s)
th at aredis tribut edove rth etir econ tact surface.
If th etir etread isleve lwit hth ebar s,thewe ar
limit of1/ 16 in(1.6 mm) hasbeen reac hed.
Dis tribut ionofvehicl eoc cupants: distribu tion
of vehicle occupants overdesi gnat edseat posi‐
tions inave hicle.
Maximum permissible payload weight :nom i‐
nal load andluggageload plus150lb (68 kg)
multip liedby thenumber ofseats intheve hicle. Changing
awheel No
teson selecting, installing andreplac ing
tir es Mer
cedes -AMG vehicl es:obse rveth eno tesin
th eSupplement .Ot her wise, youma yno tre cog‐
nize dangers.
Yo ucan askforinf ormation rega rding permitted
wheel/ tirecom binat ionsatan aut hor ized
Mer cede s-Ben zCent er. 000A
WARNIN GRisk ofacci dent dueto inc or‐
re ct dimensi onsofwhe elsand tires
If whe elsand tires ofthewr ong size are
ins talled, thewheel brak es orwheel suspen‐
sion componen tsma ybe damag ed. 0007
Alw aysre place wheels andtires wit h
th ose that fulf illthespecif ication sof
th eor iginal part.
When replacing wheels, makesur eto fit th e
cor rect:
R Desi gnati on
R Mod el
Whe nre placing tires, mak esur eto ins tallth e
cor rect:
R Desi gnati on
R Manuf actu rer
R Model 000A
WARNIN GRisk ofinju rythro ugh exceed‐
ing thespecif iedtireload rating orthe
per missible speedrating
Ex cee ding thespecif iedtireload rating or
th eper missible speedrating mayle ad totire
da ma geand tothetir es bur sting. 0007
Ther efor e, onl yuse tiretypes andsizes
appr ovedfo ryo ur vehicle model. 0007
Obser vethetir eload rating andspee d
ra ting requ ired foryo ur vehicle. 000E
NO
TEVehicle andtiredamag eth ro ugh
tir etyp esand sizes that have notbe en
ap prove d Fo
rsaf etyre ason s,on lyuse tires, wheel s
and accessories whic hha ve been speciall y
appr ovedby Mer cedes-Ben zfo ryo ur vehicle.
These tires arespecially adaptedto thecon ‐
tr ol systems, suchas ABS ,ES P®
and
4MA TIC,andmarkedas follo ws :
R MO =Mer cedes-Ben zOr iginal Wheels
andtires 399