2019 MERCEDES-BENZ S-CLASS CABRIOLET tire size

De
tecting risks, avoiding dan ger Securing sy
stems forch ild restra int sy stems
in theve hicle
Only use thefo llowing securing sy stems forch ild
re stra int sy stems:
R theLA TC H-type (ISOFIX) mounting brac kets
R theve hicle's seat belt sy stem
Ins talling a LATC H-type (ISOFIX) child restra int
sy stem is prefer red.
Simply attaching tothe securing rings on the
ve hicle can reduce therisk of ins talling thech ild
re stra int sy stem incor rectl y.
When securing a child with the integrated seat
belt of theLA TC H-type (ISOFIX) child restra int
sy stem, alw ays comply with the permissible
gross weight forth ech ild and child restra int sys‐
te m (→ page 52).
A boos ter seat may be necessary toachie ve
proper seat belt positioning forch ildren over
40 lbs (18 kg) in weight or until they reach a
height where a thre e-point seat belt can be
ins talled proper lywithout a boos ter seat. Mercedes-Benz
recommends a suitable child
boos ter seat with a backrest and seat belt guide.
Ad vantage of a rear wa rd-facing child
re stra int sy stem
It is preferable totranspo rta baby or a small
ch ild in a suitable rear wa rd-facing child restra int
sy stem. In this case, thech ild sits in the oppo‐
site direction tothe direction of tr avel and faces
ba ckwa rds.
Babies and small children ha vecompa ratively
we ak neck muscles in relation tothe size and
we ight of their head. The risk of injury tothe cer‐
vical spine during an accident can be reduced in
a re ar wa rd-facing child restra int sy stem.
Alw ays secure a child restra int sy stem cor‐
re ctly &
WARNING Risk of inju ryor death caused
by incor rect ins tallation of thech ild
re stra int sy stem
If th ech ild restra int sy stem is incor rectly
ins talled on a suitable seating position, it
cannot per form its intended pr otective func‐
tion. The
child cannot be restra ined in theeve nt of
an accident, heavy braking or a sudden
ch ange of direction. #
Alw ays comply with the manufacturer's
ins tallation instructions forth ech ild
re stra int sy stem and its cor rect use. #
Makesure that the entire base of the
ch ild restra int sy stem alw aysre sts on
th e sitting sur face of the seat. #
Never place objects under or behind
th ech ild restra int sy stem, e.g. cush‐
ions. #
Alw ays use child restra int sy stems with
th e original co ver designed forth em. #
Alw aysre place damaged co vers with
ge nuine co vers. &
WARNING Risk of inju ryor death from
unsecured child restra int sy stems in the
ve hicle
If th ech ild restra int sy stem is not cor rectly
ins talled or secured, it could release in the 48
Occupant saf ety

Securing
thech ild restra int sy stem with the
seat belt on the front passenger seat
When ins talling a belt-secured child restra int
sy stem on the front passenger seat, alw ays
obser vethefo llowing:
0073 Obser
vethech ild restra int sy stem manufac‐
turer's ins tallation and operating instruc‐
tions.
0073 When using a
forw ard-facing child restra int
sy stem in Group I: remo vethe head
re stra int from there spective seat, if possi‐
ble.
When youre mo vethech ild restra int sys‐
te m, ins tallth e head restra int again immedi‐
ately and adjust all the head restra ints cor‐
re ctly.
0073 The ba
ckrest of thefo rw ard-facing child
re stra int sy stem must lie as flat as possible
against the backrest of the front passenger
seat.
0073 Fo
r cer tain child restra int sy stems in weight
group II or III, there may be restrictions in
th e maximum size setting, e.g. due topossi‐
ble con tact wi th thero of. 0073
The
child restra int sy stem must not be put
under stra in between thero of and the seat
cushion and/or be ins talled facing the
wrong direction. Adjust the seat backrest
inclination accordingly.
0073 The
child restra int sy stem must not be put
under stra in by the head restra ints. Adjust
th e head restra ints according ly.
0073 Ne
ver place objects under or behind the
ch ild restra int sy stem, e.g. cushions.
The seat belt on the front passenger side is
equipped with a special seatbelt retractor.
When acti vated, the special seatbelt retractor
ensures that the seat belt does not slac ken once
th ech ild restra int sy stem is secured
(→ page 52). #
Set the front passenger seat as far back as
possible and mo vethe seat into the highest
position. #
Fully retract the seat cushion length adjust‐
ment. #
Adjust the seat cushion inclination so that
th e front edge of the seat cushion is in the highest position and
there ar edge of the
seat cushion is in the lo west position. #
Set the seat backrest toan almost vertical
position. #
Installth ech ild restra int sy stem.
The entire base of thech ild restra int sy stem
must alw aysre st on the seat cushion of the
front passenger seat. #
Alw ays make sure that the shoulder belt
st ra p is cor rectly routed from the seat belt
outlet of theve hicle tothe shoulder belt
guide on thech ild restra int sy stem.
The shoulder belt stra p must be routed for‐
wa rds and down wards from the seat belt out‐
let. #
If necessar y,adjust the seat belt outlet and
th e front passenger seat according ly.56
Occupant saf ety

Emer
gency Re
moving the saf etyve st The saf
etyve sts are located in stowage spaces
in the front door. #
Take the saf etyve st bag out of stowage
space 1. #
Open the saf etyve st bag and pull out the
saf etyve st.
% Safetyve sts can also be stored in there ar
door stowage spaces. 1
Maximum number of washes
2 Maximum wash temp erature
3 Do not bleach
4 Do not iron
5 Do not tumble dry
6 Do not dry clean
7 This is a class 2 vest
The requ irements defined bythe legal standard
are on ly fulfilled in thefo llowing cases:
R ifth e saf etyve st isthe cor rect size
R the saf etyve st is fully closed whilst being
wo rn Re
place the saf etyve st inthefo llowing cases:
R there flective strips are damaged or dirt on
th ere flective strips can no longer be
re mo ved
R the maximum number of washes is exceeded
R thefluorescence has faded Flat tire
Note
s on flat tires &
WARNING Risk of accident due toaflat
tire
A flat tire se verely affects the driving charac‐
te rist ics as well as thesteering and braking
of theve hicle.
Ti re s without run-flat characteristics: #
Do not drive on with a flat tire. #
Chan getheflat tire immediately with an
emer gency spa rewheel or spare wheel.
Alternativel y,consult a qualified spe‐
cialist workshop. 356
Breakdown assis tance

The tire pressure
table sho ws there commended
tire pressure for all tires appro vedfo rth is vehi‐
cle. The recommended tire pressures apply for
cold tires under various operating conditions, i.e.
loading and/or speed of theve hicle.
If one or more tire sizes precede a tire pressure,
th e tire pressure information following is only
va lid forth ose tire sizes.
The load conditions "partially laden" and "fully
laden" are defined in theta ble for dif fere nt num‐
be rs of passengers and amounts of luggage. The
actual number of seats may dif fer from this. Some tire pressure
tables only show therim
diame ter ins tead of the comple tetire size, e.g.
R18. The rim diame ter is part of the tire size and
can be found on the tire side wall (→ page 391).
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
Maximum tire pressure (→ page 390) Checking tire pressu
res manually #
Read the tire pressure forth e cur rent operat‐
ing conditions from theTire and Loading
In fo rm ation placard or the tire pressure
ta ble. Obser vethe no tes on tire pressure. #
Remo vetheva lve cap of the tire tobe
ch ecked. #
Press the tire pressure gauge securely on to
th eva lve. #
Read the tire pressure. #
Ifth e tire pressure is lo werth an there com‐
mended value, inc rease the tire pressure to
th ere commended value. #
Ifth e tire pressure is higher than there com‐
mended value, release air. Todo so, press
down the me tal pin in theva lve, e.g. using
th e tip of a pen forex ample. Then check the
tire pressu reagain using the tire pressure
ga uge. #
Screw theva lve cap onto theva lve. 380
Wheels and tires

Fu
rther related subjects:
R Notes on tire pressure (→ page377)
R Tire pressure table (→ page379)
R Tire and Loading In form ation placard
(→ page 384) Ti
re pressure moni toring sy stem Fu
nction of the tire pressure moni toring sys‐
tem &
DANG ER Risk of accident due toincor‐
re ct tire pressure
Every tire, including the spare (if pr ovided),
should be checked when cold at least once a
month and inflated tothe pressure recom‐
mended bytheve hicle manufacturer (see
Ti re and Loading In form ation placard on the
B-pillar on the driver ’sside or the tire pres‐
sure label on the inside of the fuel filler flap
of your vehicle). If your vehicle has tires of a
dif fere nt size than the size indicated on the
Ti re and Loading In form ation placard or the tire pressu
retable, you need todeterm ine
th e proper tire pressure forth ose tires.
As an added saf etyfe ature, your vehicle has
been equipped with a tire pressure monitor‐
ing sy stem (TPMS) that illuminates a low tire
pressure indicator lamp when one or more of
yo ur tires are significantly underinflated.
Ac cording ly, if the low tire pressure indicator
lamp lights up, you should stop and check
yo ur tires as soon as possible, and inflate
th em tothe proper pressure. Driving on a
significant lyunderinflated tire causes the tire
to ov erheat and can lead totire failure.
Un derinflation also increases fuel consump‐
tion and reduces tire tread life, and may
af fect theve hicle's handling and braking abil‐
ity. Please no tethat the TPMS is not a substi‐
tute for proper tire maintenance, and it is the
driver's responsibility tomaintain cor rect tire
pressure, even if underinflation has not
re ached the le velto trig ger illumination of
th e TPMS low tire pressure indicator lamp.
Yo ur vehicle has also been equipped with a
TPMS malfunction indicator toindicate when th
e sy stem is not operating proper ly. The
TPMS malfunction indica tor is combined with
th e low tire pressure indicator lamp. When
th e sy stem de tects a malfunction, the indica‐
to r lamp will flash for appro ximately a minute
and then remain continuously illumina ted.
This sequence will continue upon subsequent
ve hicle start-ups as long as the malfunction
ex ists.
When the malfunction indicator is illumina‐
te d, the sy stem may not be able todetect or
signal low tire pressure as intended. TPMS
malfunctions may occur for a variet y of rea‐
sons, including the ins tallation of incompati‐
ble replacement or alternate tires or wheels
on theve hicle that pr eventthe TPMS from
functioning properly.
Alw aysch eck the TPMS malfunction warning
lamp af terre placing one or more tires or
wheels on your vehicle toensure that the
re placement or alternate tires and wheels
allow the TPMS tocontinue tofunction prop‐
erly. Wheels and tires
381

Even if
you ha vecalculated thetot al load care‐
full y,yo u should still make sure that the maxi‐
mum permissible gross mass and the maximum
permissible axle load of your vehicle are not
exc eeded. De tails can be found on theve hicle
identification plate. #
Have your loaded vehicle – including driver,
occupants and load – weighed on a vehicle
we ighbridge.
The measured values may not exceed the
maximum permissible values stated on the
ve hicle identification plate. Fu
rther related subjects:
R Calculation example for de term ining the max‐
imum load (→ page 386)
R Tire and Loading In form ation placard
(→ page 384)
R Tire pressure table (→ page379)
R Vehicle identification plate Calculation
example for de term ining the
ma ximum load The
following table sho wsexamples of how to
calculate total and load capacities with varying seating con
figurations and dif fere nt numbe rs
and sizes of occupants. The following examples
use a maximum load of 1500 lbs (680 kg).This
is for illustration purposes on ly.Make sure
yo u are using the actual load limit foryo ur vehi‐
cle stated on your vehicle's Tire and Loading
In fo rm ation placard (→ page 384).
The higher thewe ight of all the occupants, the
smaller the maximum load for lugga ge.
Ste p 1 Example
1E xamp le 2
Combined maximum weight of occupants and
load (data from theTire and Loading In form ation
placard) 15
00 lbs (680 kg)1 500 lbs (680kg)386
Wheels and tires

Ti
re labeling Overview of tire labeling
1
Uniform Ti reQuality Grading Standard
(→ page 388)
2 DOT,Tire Identification Number
(→ page 389)
3 Maximum tire load (→ page 390)
4 Maximum tire pressu re (→page 390) 5
Manufacturer
6 Characteristics of the tire (→ page 391)
7 Tire size designation, load-beari ng capacity,
speed rating and load ind ex (→page 391)
8 Tire name
% The da tashown in the image is example
data. Ti
re Quality Grading In accordance with
the US Department of Trans‐
por tation's "Uni form Ti reQuality Grading Stand‐
ards", tire manufacturers are requ ired tograde
th eir tires on the basis of thefo llowing thre e per‐
fo rm ance factors: 1
Tread weargrade
2 Traction grade
3 Temp erature grade
% The data shown in the image is example
data.
% The classification is not legally stipulated for
Canada, but it is general lystated.
Tr ead weargrade
The tread wear grade is a comparative rating
based on thewe arrate ofthe tire when tested
under controlled conditions on a specified test
track of the US Department of Transpor tation.
Fo rex ample, a tire graded 150wo uld wear one 388
Wheels and tires

%
The data shown in the image is example
data.
The TIN is a unique identification number to
identify tires and comprises thefo llowing:
R DOT (Department of Transpo rtation): tire
symbol mar ks1 indicating that the tire
complies with therequ irements of the US
Department of Transpor tation.
R Manufacturer identi fication code: manu‐
fa cturer identification code 2contains
de tails of the tire manufacturer. New tires
ha ve a code with two symbols. Retreaded
tires ha vea code with four symbols. Further
information on retreaded tires (→ page 396). R
Tire size: identifier 3describes the tire
size.
R Tire type code: tire type code 4can be
used bythe manufacturer as a code to
describe specific characteristics of the tire.
R Manufacturing date: manufacturing date
5 prov ides information about the age of a
tire. The 1st and 2nd positions represent the
calendar week and the 3rd and 4th positions
st ate theye ar of manufacture (e.g. "3208"
re presents the 32nd week of 2008). Information on
the maximum tire load %
The data shown in the image is example
data.
Maximum tire load 1isthe maximum permissi‐
ble weight for which the tire is appr oved.
Do not overload the tires by exceeding the speci‐
fi ed load limit. The maximum permissible load
can be found on theve hicle's Tire and Loading
In fo rm ation placard on the B-pillar on the driv‐
er's side (→ page 384). Specifications
for maximum tire pressure %
The da tashown in the image is example
data. 390
Wheels and tires