2018 MERCEDES-BENZ E-CLASS CABRIOLET wheel size

Changing a wheel
Notes on selecting, installing and replacing
tires
Yo u can ask for information rega rding permitte d
wheel/tire combinations at an authorized
Mercedes-Benz Center.
0071 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.
00BBAlw aysre place wheels and tires with
th ose that fulfill the specifications of
th e original part.
When replacing wheels, make sure tofit th e
cor rect:
RDesignation
RModel
When replacing tires, make sure toins tallth e
cor rect:
RDesignation
RManufactu rer
RModel
0071
WARNING Risk of injury thro 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
damage andtothe tires bur sting.
00BBTherefore, only use tire types and sizes
appr ovedfo ryo ur vehicle model.
00BBObser vethe tire load rating and speed
ra ting requ ired foryo ur vehicle.
0075 NO
TEDama getovehicle and tires due to
non-app rove d tire types and sizes
Fo r saf etyre asons, only use wheels, tires
and accessories which ha vebeen appr oved
fo ryo ur vehicle byMercedes-Benz.
These tires ha vebeen specially adap tedfo r
use with the control sy stems, e.g. ABS or
ESP
®, and are mar ked as follo ws :
RMO = Mercedes-Benz Original
RMOE = Mercedes-Benz Original Extended
(run-flat tires only for cer tain wheels)
RMO1 = Mercedes-Benz Original (only cer‐
tain AMG tires)
Cer tain characteristics, e.g. handling, vehicle
noise emissions or fuel consum ption, may
ot herwise be adversely af fected. In addition,
when driving wi tha load, tire dimension var‐
iations could cause the tires tocome into
contact wi th the body and axle components.
This could result in damage tothe tires or the
ve hicle.
Wheels and tires 37
3

Observethefo llowing when selecting, ins talling
and replacing tires:
ROnly use tires and wheels of the same type
(summer tires, winter tires, MOEx tended
tires) and the same make.
ROnly 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.
ROnly ins tall tires of the cor rect size onto the
wheels.
RVe hicles with a tire pressure monitoring
sy stem: all mounte d wheels must be equip‐
ped with functioning sensors forth e tire
pressure monitoring sy stem.
RAt temp 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.
RFo r M+S tires, only use tires with the same
tread.
RObser 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 in an appropriate label
in the driver's field of vision.
RRu n in new tires at moderate speeds forth e
fi rs t 60 miles (100 km).
RRe place the tires af ter six years at the latest,
re ga rdless of wear.
RWhen 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‐
ta ct a qualified specialist workshop.
Be sure toalso observ eth efo llowing fur ther
re lated subjects:
RNo tes on tire pressure (→page 354)
RTire and Loading Info rmation placard
(→page 360)
RTi re size designation, load-beari ng capacity,
speed rating and load ind ex(→page 368)
RTire pressure table (→page 355)
Note s onrotating wheels
0071
WARNING Risk of injury thro 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.
00BBRo tate front and rear wheels only ifth e
wheels and tires are of the same dimen‐
sions.
Wheels and tires 37
5

Thewear patte rns on the front and rear wheels
dif fer:
RFr ont wheels wear more on the shoulder of
th e tire
RRe ar wheels wear more in the center of the
tire
On vehicles that ha vethe same size front and
re ar wheels, rotat eth e wheels according tothe
inter vals in the tire manufacturer's warranty
book in your vehicle documents. If this is not
av ailable, rotate the tires every
3,000 to6,000 miles (5,000to10,000 km),
depending on thewe ar. Ensure that the direction
of rotation is maintained.
It is impe rative toobser vethe instructions and
saf etyno tes on "Wheel change" when doing so.
Note s onstoring wheels
RAf terre moving wheels, store them in a cool,
dry and preferably dark place.
RPr otect the tires from conta ct withoil, grease
or fuel.
Overview of the tire-chan getool kit
Apart from some countr y-specific variants, vehi‐
cles are not equipped with a tire-change tool kit.
Fo r more information on which tire-changing
to ols are required and appr oved for per form ing a
wheel change on your vehicle, consult a qualified
specialist workshop.
Necessary tire-changing tools may include, for
ex ample:
RJack
RChock
RWheel wrench
RCentering pin
The tire-change tool kit is located in tool bag 1.
1Tool bag
To ol bag 1contains:
RJack
RGloves
RWheel wrench
RCentering pin
RFo lding wheel chock
RRa tchet for jack
37 6
Wheels and tires

Short messagessee Text message s
Side impact air bag ................................... 38
Side impact pr otection ............................ 176
Side windo ws............................................. 71
Child safetyloc kin there ar
passenger compartment ...................... .55
Closin g .................................................. 71
Closin g (all) ............................................ 71
Closin g using the SmartK ey................... 74
Con venience closing feature ................ .73
Con venience opening ............................ 73
Opening .................................................7 1
Opening (all) .......................................... 71
Opening with the SmartK ey................... 73
Problem .................................................7 5
Size designation (tires) ........................... 368
SmartK ey................................................... 57
Battery .................................................. 59
Energy consump tion .............................. 58
Fe atures ................................................ 57
Ke yring attachment .............................. 59
Mechanical key ...................................... 59
Overvie w.............................................. .57 Pa
nic alarm ........................................... 58
Problem ................................................. 60
Un locking sett ing .
................................. 58
Sma rtphone
see Android Auto
see Apple CarPlay™
see Telephone
Snow chains ............................................ 353
Soc ket (12 V) ............................................ 107
Fr ont center console ............................1 07
Re ar passenger compartment ............ .108
Soft top
Care .................................................... 325
Closing (soft- top switch) ........................ 76
Closing using the SmartK ey................... 74
Opening (soft-top switch) ......................7 6
Opening with the SmartK ey................... 73
Problem .................................................8 2
Re locking .............................................. .78
Soft-top switch .......................................... 76
Software update Impor tant sy stem updates .................. .241
Information .......................................... 240
Pe rforming ...........................................2 41Sound
PRE-SAFE
®Sound ................................. 46
Wheels and tires ..................................3 52
Sound see Burmes ter
®sur round sound sy stem
see Sound settings
Sound settings ......................................... 311
Ad justing the balance/fader ............... .312
Ad jus ting tre
ble, mid-range and bass
settings ................................................ 312
Au tomatic volume adjustment ............ .312
Calls up the sound menu ..................... 312
Information .......................................... 311
Speech dialog sy stem
see Voice Cont rol Sy stem
Speed index (tires) ..................................368
Speedome ter
Digital ..................................................2 04
St andby mode
Ac tivating/deactivating .......................1 53
Fu nction .............................................. 152
St anding lights ......................................... 111
Index487

0024Yellow elect ric park ing brake
indicator lamp is malfunctioning .......... 451
Wa rning/indicator lamps ...................8,44 3
Instrument display (ove rview) .................. 8
Overview ............................................ .443
PA SSENGER AIR BAG ............................ 43
Wa rranty .................................................... 26
Wa sher fluid
see Windshield washer fluid
Wa shing byhand (care) .......................... 322
We ather information ............................... 268
We b br owser
Calling up a web page ........................ .289
Calling up options ............................... 290
Calling up the settings ........................ .290
Deleting a bookmark ........................... 290
Deleting br owser data ........................ .290
Ending ................................................. 290
Managing bookmark s .......................... 290
Overview ............................................. 289
Showing/hiding the menu .................. .289
We bsite
Calling up ............................................ 289 Showing/hiding
thewe b br ows er
menu ................................................... 289
Wheel chock ............................................ .376
Wheel rotation ............................ ............
.375
Whe

els
Ca re .................................................... 327
Changing hub caps .............................. 377
Checking .. .......................................... .352
Che cking the tire pressure (man‐
ually) ................................................... 356
Checking the tire pressure (tire pres‐
sure monitoring sy stem) ..................... .358
Definitions ...........................................3 70
DO T,Tire Identification Number (TIN)
.............................................................3 66
Fitting ..................................................3 80
Flat tire ................................................ 332
Load index ...........................................3 68
Load-beari ng capacity ......................... 368
Maximum tire load ............................... 367
Maximum tire pressure ........................ 367
MOExtended tires ................................ 333
Noise ................................................... 352
No tes on ins talling .............................. .373
Overview of tire labeling ......................3 65Re
moving ............................................ 380
Re placing .....................................3 73,37 7
Re starting the tire pressure loss
wa rning sy stem ................................... 360
Re starting the tire pressure monitor‐
ing sy stem .......................................... .359
Ro tating ............................................... 375
Selection ............................................. 373
Snow chains ...................... ...
............... 353
Speed rating ........................................ 368
St oring .................................................3 76
Te mp erature grade .............................. 365
Ti re and Loading Info rmation placard
............................................................ .360
Ti re characteristics .............................. 368
Ti re pressure (N otes) ........................... 354
Ti re pressure loss warning sy stem
(function) ............................................. 359
Ti re pressure monitoring sy stem
(function) ............................................. 357
Ti re pressure table .............................. 355
Ti re Quality Grading ............................. 365
Ti re size designation ............................3 68
TIREFIT kit ...........................................3 34
Tr action grade .................................... .365
Tr ead wear grade ................................ .365
Index 495