2019 MERCEDES-BENZ S-CLASS CABRIOLET tire type

Preceding letter
1
1:
R Without: passenger vehicle tires according to
European manufactu ring standards.
R "P": passenger vehicle tires according toUS
manufacturing standards.
R "LT": light truck tires according toUS manu‐
fa cturing standards.
R "T": compact emer gency spa rewheels with
high tire pressure that are on ly designed for
te mp orary use in an emer gency.
Aspect ratio 3
3:
Ra tio between tire height and tire width in per‐
cent (ti reheight divided bytire width).
Tire code 4
4(tire type):
R "R" radial tire
R "D": bias ply tire
R "B": bias belted tires
R "ZR": radial tire with a maximum speed abo ve
14 9mp h (240 km/h) (optional) Rim diame
ter5
5:
The diam eter of the bead seat (not the diame ter
of therim flange). The rim diame ter is specified
in inches (in).
Load-bearing index 6 6:
Numerical code that specifies the maximum
load-bearing capacity of a tire (e.g. "91" cor re‐
sponds to1356 lbs (6 15kg)).
The load-bearing capacity of the tire must be at
least half the permissible axle load of your vehi‐
cle. Do not overload the tires byexc eeding the
specified load limit.
See also:
R Maximum permissible load on theTire and
Loading In form ation placard (→ page 384)
R Maximum tire load (→ page 390)
R Load ind ex
Speed rating 7 7:
Specifies the appr oved maximum speed of the
tire. %
An electronic speed limi ter pr events your
ve hicle from exceeding a speed of 130mph
(2 10 km/h).
Ma kesure that your tires ha vetherequ ired
speed rating. You can obtain information on the
re qu ired speed rating from an au thorized
Mercedes-Benz Center.
Summer tires Inde
xS peedrating
Qu pto 100mp h (160 km/h)
Ru pto 106mp h (170 km/h)
Su pto 112mp h (1 80 km/h)
Tu pto 118mp h (190 km/h)
Hu pto 130mp h (2 10km/h)
Vu pto 149mp h (2 40 km/h)
Wu pto 168mp h (270 km/h)
Yu pto 186mp h (3 00 km/h) 392
Wheels and tires

th
ese are ins talled on theve hicle, but does not
include passengers or luggage.
Maximum tire load: the maximum tire load is
th e maximum permissible weight in kilog rams or
lbs for which a tire is appr oved.
Maximum permissible tire pressure: maxi‐
mum permissible tire pressure for one tire.
Maximum load on one tire: maximum load on
one tire. This is calculated bydividing the maxi‐
mum axle load of one axle bytwo.
PSI (pounds per square in ch):standard unit of
measurement for tire pressu re.
Aspect ratio: ratio between tire height and tire
width in pe rcent.
Ti re pressure: pressure inside the tire applying
an outward forc eto eve rysquare inch of the tire.
The tire pressure is specified in pounds per
square inch (psi), in kilopascals (kPa) or in bar.
The tire pressure should only be cor rected when
th e tires are cold.
Cold tire pressure: the tires are cold when the
ve hicle has been par kedfo r at least 3 hours without direct sunlight on
the tires or theve hicle
has been driven for less than 1 mile (1.6 km).
Ti re contact sur face: the part of the tire that
comes into con tact wi th thero ad.
Ti re bead: the purpose of the tire bead is to
ensure that the tire sits securely on the wheel
ri m. There are se veral wire cores in the tire bead
to preve ntthe tire from changing length on the
wheel rim.
Side wall:the part of the tire between the tread
and the tire bead.
We ight of optional equipment: the combined
we ight of the optional equipment weighing more
th an there placed standard parts and more than
5 lbs (2.3 kg).This optional equipment, such as
high-per form ance brakes, le vel control sy stem, a
ro of luggage rack or high-per form ance bat teries,
is not included in the curb weight and thewe ight
of the accessories.
TIN (Tire Identification Number): a unique
identification number which can be used by a
tire manufactu rerto identify tires, forex ample,
in a product recall, and thus identify the pur‐
ch asers. The TIN is made up of the manufactur‐ er's identity code, tire size, tire type code and
th e manufacturing date.
Load-bearing index: the load-bearing index is a
code that con tains the maximum load-bearing
capacity of a tire.
Tr action: traction is the grip resulting from fric‐
tion between the tires and thero ad sur face.
We ar indicator: narrow bars (tread wear bars)
th at are distributed overth e tire conta ct surface.
If th e tire tread is le vel with the bars, thewe ar
limit of 1/ 16in (1.6 mm) has been reached.
Distribution of vehicle occupants: distribution
of vehicle occupants over designated seat posi‐
tions in a vehicle.
Maximum permissible pa yload weight: nomi‐
nal load and luggage load plus 150 lb (68 kg)
multiplied bythe number of seats in theve hicle. Wheels and tires
395

Changing a wheel
Note
s on selecting, installing and replacing
tires Mercedes
-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may not recog‐
nize dangers.
Yo u can ask for information rega rding permit ted
wheel/tire combinations at an authorized
Mercedes-Benz Center. &
WARNING Risk of accident due toincor‐
re ct dimensions of wheels and tires
If wheels and tires of the wrong size are
ins talled, the wheel brakes or wheel suspen‐
sion components may be damaged. #
Alw aysre place wheels and tires with
th ose that fulfill the specifications of
th e original part.
When replacing wheels, make sure tofit the
cor rect:
R Designation R
Model
When replacing tires, make sure toins tallthe
cor rect:
R Designation
R Manufactu rer
R Model &
WARNING Risk of inju rythro ugh exceed‐
ing the specified tire load rating or the
permissible speed rating
Exceeding the specified tire load rating or
th e permissible speed rating may lead totire
dama geand tothe tires bur sting. #
Therefore, only use tire types and sizes
appr ovedfo ryo ur vehicle model. #
Obser vethe tire load rating and speed
ra ting requ ired foryo ur vehicle. *
NO
TEVehicle and tire damage thro ugh
tire types and sizes that ha venot been
appr oved Fo
r saf etyre asons, on lyuse tires, wheels
and accessories which ha vebeen specially
appr ovedby Mercedes-Benz foryo ur vehicle.
These tires are specially adap tedto the con‐
trol sy stems, such as ABS, ESP ®
and
4MATIC, and mar ked as follo ws:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(run-flat tire only for cer tain wheels)
R MO1 = Mercedes-Benz Original (only cer‐
tain AMG tires)
Cer tain characteristics, such as handling,
ve hicle noise emissions, fuel consum ption,
et c. may otherwise be adversely af fected.
Fu rthermore, other tire sizes could result in
th e tires rubbing against the body and axle
components when loaded. This could result
in damage tothe tire or theve hicle. 396
Wheels and tires

Obser
vethefo llowing when selecting, ins talling
and replacing tires:
R Only use tires and wheels of the same type
(summer tires, winter tires, MOEx tended
tires) and the same make.
R Only ins tall wheels of the same size on one
axle (left and right).
It is only permissible toins tall a dif fere nt
wheel size in theeve nt of a flat tire in order
to drive tothe specialist workshop.
R Only ins tall tires of the cor rect size onto the
wheels.
R Vehicles with a tire pressure monitoring
sy stem: All ins talled wheels must be equip‐
ped with functioning sensors forth e tire
pressure monitoring sy stem.
R Attemp eratures below 45 °F (7 °C), use win‐
te r tires or all-season tires mar ked M+S for
all wheels.
Wi nter tires bearing the004D snowflake sym‐
bol in addition tothe M+S marking pr ovide
th e best possible grip in wintry road condi‐
tions. R
For M+S tires, only use tires with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tires ins talled.
If th is is below theve hicle's maximum speed,
th is must be indicated byan appropriate
label in the driver's field of vision.
R Break in new tires at moderate speeds for
th efirs t 60 miles (100 km).
R Replace the tires af ter six years at the latest,
re ga rdless of wear.
R When replacing with tires that do not fea‐
ture run-flat characteristics: vehicles with
MOExtended tires are not equipped with a
TIREFIT kit at thefa ctor y.Equip theve hicle
with a TIREFIT kit af terre placing with tires
th at do not feature run-flat characteristics,
e.g. winter tires.
Fo r more information on wheels and tires, con‐
tac t a qualified specialist workshop.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tire pressure (→ page377) R
Tire and Loading In form ation placard
(→ page 384)
R Tire size designation, load-beari ng capacity,
speed rating and load ind ex (→page 391)
R Tire pressure table (→ page379) Note
s onrotating wheels &
WARNING Risk of inju rythro ugh dif fer‐
ent wheel sizes
Inter changing the front and rear wheels if the
wheels or tires ha vediffere nt dimensions
may se verely impair the driving characteris‐
tics.
The wheel brakes or wheel suspension com‐
ponents may also be damaged. #
Rotate front and rear wheels on lyifthe
wheels and tires are of the same dimen‐
sions. 398
Wheels and tires

K
KEYLESS-GO Locking theve hicle ................................ 63
Problem .................................................64
Un locking setting .................................. 59
Un locking theve hicle ............................63
Kickd own.................................................1 42
Using ................................................... 14 2
Knee airbag ................................................ 37L
Labeling (tires) see Tire labeling
Lamp see Interior lighting
Lamps (Instrument Display) see Warning/indicator lamps
Lane de tection (au tomatic)
see Active Lane Keeping Assist
Lane Keeping Assist
see Active Lane Keeping Assist Language
.................................................2 52
No tes .................................................. 252
Setting .................................................2 52
LA TC H-type (ISOFIX) child seat secur‐
ing sy stem
In stalling ................................................ 52
Le vel control sy stem
see AIRMATIC
Light switch Overview .............................................. 111
Lighting see In terior lighting
see Lights
Lights ........................................................ 111
Ad aptive Highbeam Assist .................. .114
Ad justing the instrument lighting ......... 214
Au tomatic driving lights ....................... 11 2
Combination swit ch............................. 11 2
Corne ring light function ....................... 11 4
Haza rdwa rning lights .......................... 11 3
High beam ............................................ 11 2
High-beam flasher ................................ 11 2
Light switch .......................................... 111
Lo w-beam headlamps .......................... 111Pa
rking lights ...................................... .111
Re ar fog lamp ....................................... 111
Re sponsibility for lighting sy stems .......1 11
Setting theex terior lighting switch-
off delay time ....................................... 11 5
Setting the sur round lighting ................ 11 5
St anding lights .................................... .111
Tu rn signals .......................................... 11 2
Limited Warranty
Ve hicle .................................................. 25
Live Traf fic Information
Displaying subsc ript ion information .... .276
Displ aying the tra ffic map .................. .277
Displ aying traf fic incidents .................. 277
Extending a subscription ...................... 276
Issuing hazard alert s ........................... 278
Load index (tires) .................................... .391
Load-bea ring capacity (tires) ................. 391
Loading Definitions ...........................................3 93
No tes ..................................................... 99
St ow age space under the trunk floor ... 104
Loading guidelines .................................... 99 Index
495

Ro
ute ................................................ 267, 269
Ac tivating a commuter route .............. .269
Calculating .......................................... 267
Displ aying destination information ...... 269
Planning .............................................. 264
Selecting a type .................................. .267
Selecting an al tern ative route ............ .269
Selecting notifications ......................... 269
Selecting options ................................ 268
St arting the automatic service sta‐
tion sear ch.......................................... 270
Switching the automatic gasst ation
sear chon/off ...................................... 270
Using automatic gasst ation sear ch.... 270
Wi th intermediate destinations .......... .264
Ro ute guidance ........................................ 270
Canceling ............................................ .274
Changing direction .............................. 271
Destination reached ............................ 272
Fr om an off-road location .................... 274
Lane recommendations ....................... 272
No tes ................................................... 270
Off-road ............................................... 274
To an off- road destination .................... 274Ro
ute-based speed adaptation
Displ ays in the Instrument Display .......1 75
Fu nction .............................................. 17 0
Ro ute-based speed adjustment
Setting ................................................ .171
Ru n-flat characteristics
MOExtended tires ................................ 357 S
Saf ety sy stems
see Driving saf ety sy stem
Satellite map ...........................................2 84
Satellite radio
Ac tivating/deactivating TuneS tart ....... 332
Ad ding a channel toSmart Favorite s ... 332
Deleting a channel .............................. .331
Displ aying EPG information ................ .331
Displ aying service information ............ 333
Information .......................................... 328
Information about Smart Favorites
and TuneS tart ...................................... 332
Logging in ............................................ 328
Moving a channel ................................ 331
Music and sport alerts function .......... .331 Overview ............................................. 330
Pa use and playback function .............. .332
Re strictions ......................................... 328
Selecting a catego ry............................ 331
Selecting a channel ............................ .331
Setting music and spo rtalerts ............ .331
Setting the parental control ................. 331
St oring a channel ................................ .331
Switching on ....................................... 329
SD card Inserting/removing .............................. 313
Seat ............................................................ 85
Ad justing (electrically) ........................... 86
Ad justing the front passenger seat
from the driver ’sseat ............................88
Con figuring the settings ........................ 90
Cor rect driver's seat position ................ 85
Fo lding the backrest forw ards/back .... .91
Massage program overview .................. .91
Operating the memory function ............ 98
Pa nel heating ......................................... 93
Re setting the settings ............................91
Setting au tomatic lateral support
adju stment ............................................ 90
Switching AIRSCARF on/off .................. 94 Index
503

Ve
hicle tool kit ........................................ 358
TIREFIT kit .......................................... .358
To wing eye ...........................................3 72
Ve ntilating
Con venience opening ............................ 74
Ve nts
see Air vents
Vi deo mode .............................................. 319
Ac tivating ............................................ .317
Ac tivating/deactivating full-screen
mode ................................................... 319
Overview ..............................................3 18
Settings ............................................... 319
VIN ............................................................ 408
Identification plate .............................. 408
Seat ..................................................... 408
Wi ndshield ........................................... 408
Vi sion
Re moving condensation from the
windo ws.............................................. 12 5
Vo ice command types (Voice Control
Sy stem) .................................................... 223 Vo
ice Control Sy stem ............................ .222
Application speci fic vo ice commands
............................................................ .223
Au dible help functions .........................2 24
Global voice commands ...................... 223
Impr oving speech quality .................... .224
Langua gesetting ................................. 224
Media pla yervo ice commands ............ 231
Message voice commands .................. 233
Multifunction steering wheel (operat‐
ing) ...................................................... 222
Na vigation voice commands ................ 226
Operable functions .............................. 223
Operating saf ety .................................. 222
Ra dio voice commands ...................... .230
Switch voice commands ...................... 224
Te lephone voice controls .................... .229
Te xt messa gevoice commands .......... .233
Ty pes of voice commands .................. .223
Ve hicle voice commands .................... .234
Vo ice prom pting .................................. 223
Vo ice control sy stem
see Voice Cont rol Sy stem W
Wa rning lamps
see Warning/indicator lamps
Wa rning sy stem
see ATA (anti-theft alarm sy stem)
Wa rning/indicator lamp
0025ABS warning lamp ...................... .466
0027Brake warning lamp (USA) .......... .465
004DBrakes warning lamp (Canada) .... 465
00ACCoolant warning lamp .................. 473
003D Electrical malfunction warning
lamp .................................................... 472
00B9 Engine diagnosis warning lamp .. .472
00BB ESP®
OFF warning lamp .............. 469
00E5ESP ®
wa rning lamp flashes ........ .468
00E5ESP ®
wa rning lamp lights up ...... .468
00B6Fu elreser vewarning lamp .. .472,473
00CC Powe rst eering sy stem warning
lamp .................................................... .476 512
Index