2021 MERCEDES-BENZ GT COUPE tire size

Obser
vethefo llo wing when selecting,ins talling
and replacing tires:
R Further mor e,theuse ofcer tain tiretypes in
cer tain regions andareas ofoper ation can
be highl ybenef icial.
R Onlyuse tires and wheels ofthesame type
(summer tires, wint ertires, MOEx tende d
tir es) and thesame make.
R Onlyins tallwheels ofthesame sizeonone
axle (leftand right).
It is onl yper missible toins talla dif fere nt
wh eelsi ze intheeve ntofaflat tirein order
to drive to thespecialis two rkshop.
R Vehicl eswith atir epr ess uremonit oring
sy stem: Allinstalled wheels mustbe equip‐
ped withfunc tioningsensorsfo rth etir e
pr essur emonit oring system.
R Attemp eratur esbelo w45 °F(7°C) use win‐
te rtir es orall-seaso ntir es mar kedM+S for
all wheels .
Wi nter tires with the004D snowflak esymbol
in addition totheM+S marking prov ide the
bes tpossible grip inwintr yro ad con dition s. R
ForM+S tires, only usetires wit hth esame
tr ead.
R Obser vethemaximum permissible speedfor
th eM+S tires installed.
If th etir e's maximum speedisbelo wthat of
th eve hicle, this mus tbe indic ated byan
appr opriatelabel inthedr iver's field of
vision.
R Break inne wtires atmoder atespeeds for
th efirs t60 miles(1 00 km) .
R Replace thetir es afte rsix yearsat thelat est,
re ga rdless ofwe ar.
R Wh enreplac ingwith tires that donotfe a‐
tur eru n-f lat charact eristics :ve hicles with
MOExt ended tires areno teq uipped witha
TIREFIT kitatthefa ct or y. Eq uip th eve hicle
wit haTIREFIT kitafte rre placing withtir es
th at do notfe atur eru n-f latch aract eristic s,
e.g .wint ertires.
Fo rmor einf ormation onwhee lsand tires, con‐
ta ct aqu alif ied spec ialistwo rkshop. Be
sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page293)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page29 9)
R Tire size designation, load-bearing cap acity,
spe edrating andload index(/ pag e306)
R Tire pressur eta ble (/ page295)
R Noteson theemer gency sparewheel
(/ page32 1) &
WARNIN GRisk ofacci dent caused by
non-a pprove dtir etypes
If yo uuse tiretype sth at have notbe en adap‐
te dto chang esmade tothefa ct or yspe ed
li mit, this can have thefo llo wing consequen‐
ces:
R The tires areno tsuit able forhigh speeds
and thecor responding driving dynamics.
R The tires wearune venly and affect the
ro adw orthines sof theve hicle. Wheels
andtires 31
3

R
ABS, ESP®
and cruise contr olop erati on
ar ere strict ed.
Thi scan jeop ardize road safety. #
Onlyuse tiretypes that have been
appr ovedfo rth emaximum permissible
speed setand theve hicle. No
teson rotat ing whee ls &
WARNIN GRisk ofinju rythro ugh differ‐
ent whee lsizes
Int erch ang ingthefront and rear wheels ifth e
wheels ortires have differe nt dimens ions
ma yse verely im pa irth edr iving charact eris‐
tic s.
The wheel brak es orwheel suspension com ‐
pon entsma yalso bedamag ed. #
Rotate front and rear wheels onlyifth e
wheels andtires areof thesame dimen‐
sions. The
wearpat tern son thefront and rear wheels
dif fer:
R Front wheels wearmor eon theshoulder of
th etir e
R Rear wheels wearmor eat thecent erofthe
tir e
Do notdr ive wi th tires that have toolittle tread
dep th.Thi ssig nifica ntlyre duces traction onwet
ro ads (hydr oplan ing).
On vehicles that have thesame sizefront and
re ar wheels ,ro tat eth ewheels accordingtothe
int erva ls in thetir emanuf acturer'swarrant y
book inyour vehicle documents. Ifth is isno t
av ailable, rotate thetir es every
3,000 to6,000 miles(5 ,000 to10,000 km),
dependin gon thewe ar.En sur eth at thedir ect ion
of rotatio nis ma intained .
Ob serveth eins truction sand safetyno teson
"Cha nging awheel" whendoing so
(/ page31 5). No
teson sto ring wheels When
stor ing wheels, observethefo llo wing
no tes:
R Afterre mo ving whee ls,stor eth em inacool,
dr yand prefer ably darkplace.
R Protect thetir es from contact with oil, grease
or fuel. Ov
ervie wof thetir e-c han getool kit Apar
tfr om some country- specif icvariant s,vehi‐
cles areno teq uipped withatir e-c hang eto ol kit.
Fo rmor einf ormation onwhi chtire-c hangi ng
to ols arere qu ired and appr ovedfo rper form ing a
wheel chang eon your vehicle, consult aqu alif ied
spec ialistwo rkshop.
Re quired tire-c hang eto ol kit mayinclude, for
ex am ple:
R Jack
R Choc k
R Lugwr enc h
R Alignmen tbolt 31
4
Wheels andtires

Emer
gency spar ewheel No
teson theemer gency spar ewheel &
WARNIN GRisk ofacci dent caused by
inc orrect whe eland tiredimensi ons
The wheelor tiresize andthetir etype ofthe
emer gency sparewheel orspar ewheel and
th ewheel tobe replaced maydif fer. The
emer gency sparewheel orspar ewheel can
sign ifican tly im pair drivin gch aract eristic sof
th eve hicle.
To preve nthazardous situa tions: #
Adaptyo ur drivin gst yle accor dinglyand
dr ive car efull y. #
Neverins tallmor eth an oneemer gency
spa rewheel orspar ewheel that dif fers
in size . #
Onlyuse anemer gency sparewheel or
spar ewheel ofadif fere nt size briefly. #
Donotsw itchof fESP ®
. #
Have theemer gency sparewheel or
spar ewheel ofadif fere nt size replaced
at thenear estqu alif ied spec ialistwo rk‐ shop.
Thenewwheel mustha ve the
cor rect dimensi ons. Obs
erve thefo llo wing noteson installing an
emer gency sparewheel:
R Chec kth etir epr essur eof theemer gency
spa rewheel installed. Correct thepr essur e
as neces sary.
R The maximum permissible speedwithan
emer gency sparewheel installed is50 mph
(80 km/ h).
R Donoteq uip theemer gency sparewheel
wit hsn ow chains .
R Replace theemer gency sparewheel afte rsix
ye arsat thelat est,re ga rdless ofwe ar.
% Ve
hicl eswith atir epr ess uremonit oring
sy stem: Ifan emer gency sparewheel is
ins talled thetir epr essur emonit oring system
cann otfunction reliabl y.Fo ra fe w min utes
af te ran emer gency sparewheel isins talled,
th esy stem mayst ill displa yth etir epr essur e
of there mo vedwheel. Onlyre star tth esy s‐
te m again when theemer gency sparewheel
has been replaced withane wwheel. Be
sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page293)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page29 9)
R Tire pressur eta ble (/ page295)
R Noteson installing tires (/ page31 1) Whee
lsand tires 32
1

Ser
vice center
see Qualif iedspecialis two rkshop
Ser vice interva ldisp lay
see ASSYST PLUS
Ser vice station search
St artin gaut omat icsear ch<0011001100110011001100110011001100110011001100110011001100110011
001100110011> 197
Se tting aspeed
see Cruise control
Se tting summ ertime .............................. 173
Se tting theda te form at ....... .................... 173
Se tting thedis tance unit........................ 177
Se tting thema pscale
see Map
Shif tpa dd les
see Steer ing wheel paddle shifters
Shif ting gears
Gea rshif tre comme ndation <0011001100110011001100110011001100110011001100110011001100110011
00110011> 111
Shor tmessag es
see Text mes sage s
Side airbag ...... ...........................................3 5
Side windo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 60
Cl osi ng <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 60Cl
osi ng using theSmar tKey <0011001100110011001100110011001100110011001100110011001100110011
001100110011> 61
Con venie nce closing featur e.......... ........ 61
Con venie nce openi ng <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ...61
Opening .......................................... .......6 0
Opening withth eSmar tKey <0011001100110011001100110011001100110011001100110011001100110011
001100110011> 61
Pr oblem .................................................6 2
Size designation (tires) ........................... 306
Smar tKey <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 50
Ac ous ticlocking verificati onsignal ........ 51
Batt ery <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>..........52
Ener gyconsu mption........... ................... 51
Fe atur es................................................ 50
Ke yring attachme nt<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .....52
Mec hanica lke y ...................................... 52
Ov ervie w ........................................ .......5 0
Pa nic alar m <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011>51
Pr oblem .................................................5 3
St artin gth eve hicle ........................ .......9 5
Un loc kin gse tting ............................ .......5 1
Smar tKey functio ns
Deactiv ating........................................... 51
Smar tphone
see Andr oidAuto
see Apple CarPla y® see
Mercedes-Benz Link
see Telephon e
Sno wch ains ............................................293
Soc ket(1 2 V) <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 78
Fr ont cent erconsole ............................. 78
Sof twareupda te
Pe rfor ming ...........................................1 81
Sof twareup dates ................................ 180
Sy stem updat es................................... 181
Sound PRE-S AFE®
Sound ................................. 43
Wheels andtires ..................................2 92
Soun d
see Burmes ter®
high-end Surround
soun dsy stem
see Burmes ter®
sur round soun dsy stem
see Sound settings
Sound settings ........................................2 58
Ad jus ting thebalance .......................... 258
Ad jus ting treb le,mid -rang eand bass
se tting s............ ................................... 258
Au tomatic volume adjustment .............2 58
Ca lls up thesound menu ..................... 258 Inde
x41
1

Chan
gingfo lder s.................................2 22
Com posing....... ................................... 221
Conf iguring thedispla yedte xt mes ‐
sa ge s...... ....................................... ...... 221
Dele ting .......................................... ..... 222
Dr afts ...... ............................................ 222
No tes .................. ................................. 221
Op tions .................. ........................ ...... 222
Outbo x..................... ........................... 222
Re ad-al oudfunction .............................2 21
Re adin g...............................................2 21
Re plying .............................................. 222
Sen ding ................ ...............................2 21
Vo ice com mand s(V oice ControlSy s‐
te m) .................................................. ... 160
Ti me
Manual timesettin g............................. 173
Se tting summer time<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 173
Se tting thetime anddateaut omati‐
call y..................................................... 172
Se tting thetime zone........................... 173
Se tting thetime/ datefo rm at .............. 173
TIN (TireIde ntificat ion Numbe r)........... .304
Ti re and Loading Information placard... 299 Ti
re charact eristics ................................. 306
Ti re inf lation com pressor
see TIREF ITkit
Ti re informa tion table .............................2 99
Ti re labeling .............................................3 03
Cha racter istics <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> ........306
DO T,Tire Identif ication Number (TIN)
..... ..... ............................................. ......3 04
Load index....... ....................................306
Load -bearing cap acity <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 306
Ma ximu mtireload <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ....305
Ma ximu mtirepr ess ure <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 305
Ov ervie w <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>303
Spe edrating ........... .............................306
Te mp eratur egr ade .............................. 303
Ti re Qua lityGradi ng .......... ................... 303
Ti re size designation ........................ ....3 06
Tr act ion grade ................................ .....3 03
Tr ead weargrade ............................ .....3 03
Ti re load (maximu m)...............................3 05
Ti re pres sur e<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 295,296
Ch ecking (manually) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 296
Ch ecking (tirepr ess uremoni toring
sy stem) .......................................... ..... 298 Maximum
............................................ 305
No tes .................................................. 293
Re star tin gth etir epr essur emonit or‐
ing system ...........................................2 98
Ti re pressur emonit oring system
(funct ion)............................................. 296
Ti re pressur eta ble .............................. 295
TIREF ITkit ...........................................2 77
Ti re pres sur emoni tor
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>296
Re star tin g............................................ 298
Ti re pres sur emoni toring system
Chec kingth etir epr essur e.................. 298
Ti re pres sur etab le<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 295
Tir eQual ityGradin g<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 303
Tir ete mp eratur e
Ti re pressur emonit oring system
(funct ion)............................................. 296
Ti re tread <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ..292
Tir e-c hang eto ol kit
Ov ervie w .............................................. 314
TIRE FITkit <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 277
St or ag elocation ..................................2 77 41
4
Inde x

Using
............... .................................... 277
Ti re s
Charact eristic s................................ .... 306
Chec king...... .......................................2 92
Che cking thetir epr essur e(man‐
uall y)............... ................................. ... 296
Chec kingthetir epr essur e(tir epr es‐
sur emonit oring system) ......................2 98
Def initio ns....... ................................... .308
DO T,Tire Identif ication Number (TIN)
..... .................... .............................. ......3 04
Flat tire ....... ......................................... 275
Ins talling .............................................. 319
Load index..... ...................................... 306
Load-be aring capaci ty..... .................... 306
Maximu mtireload ......................... ..... 305
Maximu mtirepr essur e..... .................. 305
MOExt ended tires ................................ 276
No ise .............................................. .....2 92
No tes ................................................... 104
No teson installing ...............................3 11
Ov ervie wof tirelabel ing......................3 03
Re mo ving ............................................. 318
Re placing ...................................... 311, 315 Re
star tin gth etir epr essur emonit or‐
ing system ...........................................2 98
Ro tating ........... ................................. ...314
Sel ectio n<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 311
Sno wch ains ........................................ 293
Spe edrating ........... .............................306
St or ing ............................................. ....3 14
Te mp eratur egr ade .............................. 303
Ti re and Loadi ngInfo rm atio nplacar d
.. ...................................................... .....2 99
Ti re pressur e(no tes) ........................ ... 293
Ti re pressur emonit oring system
(funct ion)............................................. 296
Ti re pressur eta ble .......................... .... 295
Ti re Qua lityGradi ng .......... ................... 303
Ti re size designation ........................ ....3 06
TIREFIT kit....... ....................................277
Tr act ion grade ................................ .....3 03
Tr ead weargrade ............................ .....3 03
Un usual handlingch aract eristic s........ 292
To ol
see Vehicle tool kit
To uc hCon trol
On-board computer ...... ....................... 148
Oper ating ............................................ 165 Se
tting thesensit ivity.......................... 165
To uc hpad ..................................................166
Ac tivati ng/d eactiv ating haptic oper‐
ation feedbac k.....................................1 67
Oper ating ............................................ 166
Re adin gth ehandwr itingrecogni tion
al ou d <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011>167
Sel ecting ast atio nand track...............1 67
Se tting thesensit ivity.......................... 167
To w- bar system .......................................1 45
To w- star ting .............................................289
To wing away <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 286
To wing eye
Ins talling .............................................. 289
St or ag elocation ..................................2 89
To wing methods ...................................... 286
Tr ac k
Selecti ng(au dio mode )....... .................243
Tr ac kRa ce
Se tting .................................................1 83
Tr actio ngr ade ......................................... 303 Inde
x41
5

We
ather information ...............................211
wha t3wo rds
Des tinationentr ywi th a3 wo rd
addr ess ................................................ 193
Wheel chang e
Lo we ring theve hicle ........................... 320
Mounting ane wwheel ..................... ....3 19
Re mo ving awhee l..... ...........................318
Wheel rotat ion .........................................3 14
Wheel s
Ca re <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 271
Chec king...... .......................................2 92
Che cking thetir epr essur e(man‐
uall y)................................................ ... 296
Chec kingthetir epr essur e(tir epr es‐
sur emonit oring system) ......................2 98
Def initio ns....... ................................... .308
DO T,Tire Identif ication Number (TIN)
..... ........................................................3 04
Flat tire ....... ......................................... 275
Ins talling .............................................. 319
Load index..... ...................................... 306
Load-be aring capaci ty..... .................... 306
Maximu mtireload ......................... ..... 305 Maximu
mtirepr essur e..... .................. 305
MOExt ended tires ................................ 276
No ise .............................................. .....2 92
No tes ................................................... 104
No teson installing ...............................3 11
Ov ervie wof tirelabel ing......................3 03
Re mo ving ............................................. 318
Re placing ...................................... 311, 315
Re star tin gth etir epr essur emonit or‐
ing system ...........................................2 98
Ro tating ........... ................................. ...314
Sel ectio n<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 311
Sno wch ains ........................................ 293
Spe edrating ........... .............................306
St or ing ............................................. ....3 14
Te mp eratur egr ade .............................. 303
Ti re and Loadi ngInfo rm atio nplacar d
.. ...................................................... .....2 99
Ti re charact eristic s........................ ...... 306
Ti re pressur e(no tes) ........................ ... 293
Ti re pressur emonit oring system
(funct ion)............................................. 296
Ti re pressur eta ble .......................... .... 295
Ti re Qua lityGradi ng .......... ................... 303
Ti re size designation ........................ ....3 06
TIREFIT kit....... ....................................277 Tr
act ion grade .....................................3 03
Tr ead weargrade .................................3 03
Un usual handlingch aract eristic s........ 292
Wi -Fi........ ..................................................174
Ov ervie w ..............................................1 74
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 174
Se tting upaho tspo t<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 175
Wi ndo wcur tain airba g............................. 35
Wi ndo ws
see Side windo ws
Wi ndo ws(car e)........................................ 271
Wi ndshield .................................................8 5
Re placing thewiper blades .................... 85
Wi ndshield
see Windsh ield
Wi ndshield washer fluid .........................3 29
No tes .................................................. 329
Wi ndshield washer system
To pping up...........................................2 67
Wi ndshield wipers
Ac tivati ng/d eactiv ating ........... ..............85
Re placing thewiper blades .................... 85 Inde
x41
9