2013 MERCEDES-BENZ SL-CLASS ROADSTER load capacity

TIREFIT kit ..........................................
510
Tire pressure Calling up (on-board computer)
.....534
Checking manually ........................533
Display message ............................ 247
Maximum ....................................... 532
Notes ............................................. 531
Not reached (TIREFIT) .................... 512
Reached (TIREFIT) .......................... 512
Recommended ............................... 529
Tire pressure loss warning system
Important safety notes .................. 533
Restarting ...................................... 533
Tire pressure monitoring system
Function/notes ............................. 534
Restarting ...................................... 536
Warning lamp ................................. 266
Tires
Aspect ratio (definition) ................. 547
Average weight of the vehicle
occupants (definition) .................... 545
Bar (definition) ............................... 545
Changing a wheel .......................... 547
Characteristics .............................. 545
Checking ........................................ 527
Definition of terms ......................... 545
Direction of rotation ......................548
Display message ............................ 247
Distribution of the vehicle
occupants (definition) .................... 547
DOT, Tire Identification Number
(TIN) ............................................... 544
DOT (Department of
Transportation) (definition) ............ 545
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 546
GVW (Gross Vehicle Weight)
(definition) ..................................... 546
GVWR (Gross Vehicle Weight
Rating) (definition) .........................546
Important safety notes .................. 526
Increased vehicle weight due to
optional equipment (definition) ...... 546
Kilopascal (kPa) (definition) ........... 546
Labeling (overview) ........................ 541
Load bearing index (definition) ...... 547
Load index ..................................... 544
Load index (definition) ...................546Maximum loaded vehicle weight
(definition) .....................................
546
Maximum load on a tire
(definition) ..................................... 546
Maximum permissible tire
pressure (definition) ....................... 546
Maximum tire load
.........................544
Maximum tire load (definition) .......546
MOExtended tires .......................... 528
Optional equipment weight
(definition) ..................................... 547
Overview ........................................ 526
PSI (pounds per square inch)
(definition) ..................................... 546
Replacing ....................................... 547
Service life ..................................... 528
Sidewall (definition) .......................547
Speed rating (definition) ................ 546
Storing ........................................... 548
Structure and characteristics
(definition) ..................................... 545
Temperature .................................. 541
TIN (Tire Identification Number)
(definition) ..................................... 547
Tire bead (definition) ......................547
Tire pressure (definition) ................ 547
Tire pressures (recommended) ...... 545
Tire size (data) ............................... 552
Tire size designation, load-bearing
capacity, speed rating .................... 541
Tire tread ....................................... 527
Tire tread (definition) .....................547
Total load limit (definition) ............. 547
Traction ......................................... 540
Traction (definition) ....................... 547
Tread wear ..................................... 540
Uniform Tire Quality Grading
Standards ...................................... 540
Uniform Tire Quality Grading
Standards (definition) .................... 545
Unladen weight (definition) ............ 546
Wear indicator (definition) .............547
Wheel rim (definition) .................... 546
see Flat tire
Towing
Important safety guidelines ...........518
Installing the towing eye ................ 51824
Index

X
To exit the menu: press the V eject/
load button again or press the % back
button.
or
X Select Back by sliding VÆ and turning
cVd the COMAND controller and press
W to confirm.
Inserting and ejecting an SD memory
card General information
COMAND supports SD memory cards
(Secure Digital) and SDHC memory cards
(Secure Digital
High Capacity).
i Not all memory cards available on the
market are designed for the temperatures
which may be reached in the vehicle.
If the SD memory card is no longer in use,
you should remove it from COMAND. High
temperatures can damage the card.
Due
to the wide range of SD memory cards
available on the market, playback cannot
be guaranteed for all brands of SD memory
card.
The readable storage capacity depends on
the memory card used. You can obtain
further information at any authorized
Mercedes-Benz Center.
Inserting an SD memory card
X Insert the memory card into the slot on the
control panel until it engages in place. The
side with the contacts must face
downwards and point towards the slot.
COMAND loads the memory card and
shows a message to this effect. If no MP3
tracks can

be found, you will see a message
to this effect.
Ejecting an SD memory card
X Press the memory card.
The memory card is ejected.
X Remove the memory card from slot. Connecting a USB device The USB port is located in the stowage
compartment in the center console.
Electrical consumption at this connection
must not exceed a continuous current of
500 mA
. If the electrical consumption is
higher, use a separate source to provide
power for the USB device (e.g.
12 V power supply

).
X Connect the USB device (e.g. USB stick) to
the USB port.
i Due to the wide range of USB devices
available on the market, playback cannot
be guaranteed

for all brands of USB device.
Information about suitable USB devices
can be obtained from an authorized
Mercedes-Benz Center.
MP3 players must support Media Transfer
Protocol (MTP).
Activating audio CD/DVD or MP3 mode Automatic switching
X
Insert/eject CDs/DVDs (Y page 421)
or
X Insert an SD memory card (Y page 424)
or
X Connect a USB device ( Y page 424).
COMAND loads the medium inserted and
starts to play it.
Switching modes using the function
button
X Press the h
function
button one or more
times.
i By pressing the function button
repeatedly, you can change the operating
mode in the following order:
R audio CD/DVD/video DVD/MP3 CD/
MP3 DVD in the DVD changer or single
DVD drive (disc mode)
R memory card mode
R MUSIC REGISTER424
Audio
COMAND

Permissible formats
COMAND supports the following formats:
R
MPEG1 Audio Layer 3 (MP3)
R Microsoft Windows
Media Audio V8 and V9
(WMA) without copy protection
Microsoft Windows Media Audio V2, V7, V8
and V9 (WMA)
R additional music files in AAC format with
the file extensions .aac, .mp4, .m4a
and .m4b, but not copy-protected iTunes
music files with the extension .m4p.
i If, in addition to MP3 files, there are other
music files in these audio formats stored on
the disc, the loading process may require a
longer time before the first track is played.
i The MP3 audio encoding method is under
license from Fraunhofer IIS (Institut
Integrierte Schaltungen – Institute for
Integrated Circuits) and Thomson.
Permissible bit and sampling rates
COMAND supports MP3 files of the following
types:
R fixed and variable bit rates from 32 kbit/s
to 320 kbit/s
R sampling rates of 8 kHz to 48 kHz
COMAND supports WMA files of the
following types:
R fixed bit rates from 5 kbit/s to 384 kbit/s
R sampling rates of 8 kHz to 48 kHz
COMAND does not support WMA files of the
following types:
R DRM (Digital Rights Management)
encrypted files
R variable bit rate
R WMA Pro
R 5.1 Surround
i Only use tracks with a bit rate of at least
128 kbit/s and a sampling rate of at least
44.1 kHz. Lower rates can cause a
noticeable deterioration in quality. This is
especially the case if you have activated a
surround sound function. Notes on copyright
MP3 or WMA tracks that you create or play
back are generally subject to copyright
protection in accordance with the applicable
international and national regulations.
In many countries, reproductions, even for
private use, are not permitted without the
prior consent of the copyright holder.
Make sure
that you know about the applicable
copyright regulations and that you comply
with these.
If you own these rights yourself, e.g. for your
own compositions and recordings, or if the
copyright holder has granted you permission,
these restrictions do not apply.
Notes on CDs/DVDs
! COMAND is designed to play discs that
comply with the EN 60908 standard.
Therefore, you can only use discs with a
maximum thickness of 1.3 mm.
If you insert thicker discs, e.g. those that
contain data on both sides (DVD on one
side and audio data on the other), they
cannot be ejected and can damage the
device.
Only use round discs with a diameter of
12 cm. Do not use discs with a diameter of
8 cm, even with an adapter.
Discs with copy protection are not
compatible with the audio CD standard and
therefore may not be able to be played by
COMAND.
Playback problems may occur when playing
copied discs. There is a wide range of data
carriers, disc-writing software and writers
available. This variety means that there is no
guarantee that the system will be able to play
discs that you have copied yourself.
There may be playback problems if you play
CDs that you have copied yourself with a
storage capacity of more than 700 MB. CDs
of this type do not conform to the currently
applicable standards.
i On many DVD audio discs, the last track
does not contain any music. If COMAND 432
Audio
COMAND

Maximum permissible gross vehicle
weight rating
X
The Tire and Loading Information placard
gives you details on maximum permissible
gross vehicle weight rating : : "The gross
weight of occupants and luggage must
never exceed XXX kilograms or XXX
pounds."
The gross weight of all vehicle occupants,
load and luggage must not exceed the
specified value.
i The specifications shown on the Tire and
Loading Information placard in the
illustration are examples. The maximum
permissible gross vehicle weight rating is
vehicle-specific and

may differ from that in
the illustration. You can find the valid
maximum permissible gross vehicle weight
rating for your vehicle on the Tire and
Loading Information placard. Number of seats Maximum
number of seats
: determines
the
maximum number of occupants allowed to
travel in the vehicle. This information can be
found on the Tire and Loading Information
placard.
i The specifications shown on the Tire and
Loading Information placard in the
illustration are examples. The number of
seats is vehicle-specific and can differ from
the details shown. The number of seats in
your vehicle can be found on the Tire and
Loading Information placard. Determining the correct load limit
Step-by-step instructions The following steps have been developed as
required of all manufacturers under Title 49,
Code of U.S. Federal Regulations, Part 575
pursuant to the "National Traffic and Motor
Vehicle Safety Act of 1966".
X
Step 1: Locate the statement "The
combined weight of occupants and cargo
should never

exceed XXX kg or XXX lbs." on
your vehicle’s Tire and Loading Information
placard.
X Step 2: Determine the combined weight of
the
driver and passengers that will be riding
in your vehicle.
X Step 3: Subtract the combined weight of
the driver and passengers from XXX
kilograms or XXX lbs.
X Step 4: The resulting figure equals the
available amount

of cargo and luggage load
capacity. For example, if the "XXX" amount
equals 1400 lbs and there will be five
150 pound passengers in your vehicle, the
amount of available cargo and luggage load
capacity is 650 lbs (1400 – 750 (5 x 150)
= 650 lbs).
X Step 5: Determine the combined weight of
luggage and cargo being loaded on the
vehicle.

That weight may not safely exceed
the available cargo and luggage load
capacity calculated in step 4. 538
Loading the vehicle
Wheels and tires

on surfaces that are not icy or covered with
snow. Take appropriate care when driving.
Further information on winter tires (M+S
tires) (Y page 528).
Temperature
G
WARNING
The temperature grade for this tire is
established for a tire that is properly inflated
and not overloaded. Excessive speed,
underinflation, or excessive loading, either
separately or in combination, can cause
excessive heat build-up and possible tire
failure.
The temperature grades are A (the highest),
B, and C. These represent the tire's
resistance to the generation of heat and its
ability to dissipate heat when tested under
controlled conditions on a specified indoor
laboratory test wheel. Sustained high
temperature can
cause the material of the tire
to degenerate and reduce tire life, and
excessive temperature can lead to sudden
tire failure. The grade C corresponds to a level
of performance which all passenger car tires
must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law. Tire labeling
Overview :
Uniform Tire Quality Grading Standard
(Y page 545)
; DOT, Tire Identification Number
(Y page 544)
= Maximum tire load ( Y page 544)
? Maximum tire pressure (Y page 532)
A Manufacturer
B Tire material ( Y page 545)
C Tire size designation, load-bearing
capacity and speed index (
Y

page 541)
D Load index ( Y page 544)
E Tire name
The markings described above are on the tire
in addition to the tire name (sales
designation) and the manufacturer's name.
i Tire data is vehicle-specific and may
deviate from the data in the example.
Tire size designation, load-bearing
capacity and speed rating G
WARNING
Exceeding the stated tire load-bearing
capacity and the approved maximum speed
could lead

to tire damage or the tire bursting.
There is a risk of accident. All about wheels and tires
541
Wheels and tires
Z

Therefore, only use tire types and sizes
approved
for
your vehicle model. Observe the
tire load rating and speed rating required for
your vehicle. :
Tire width
; Nominal aspect ratio in %
= Tire code
? Rim diameter
A Load bearing index
B Speed rating
General:
depending on the manufacturer's
standards, the size imprinted in the tire wall
may not contain any letters or may contain
one letter

that precedes the size description.
If there is no letter preceding the size
description (as shown above): these are
passenger vehicle tires according to
European manufacturing standards.
If "P" precedes the size description: these are
passenger vehicle tires according to U.S.
manufacturing standards.
If "LT" precedes the size description: these
are light truck tires according to U.S.
manufacturing standards.
If "T" precedes the size description: these are
compact emergency spare wheels at high tire
pressure, to be used only temporarily in an
emergency.
Tire width: tire width : shows the nominal
tire width in millimeters.
Height-width ratio: aspect ratio ; is the
size ratio between the tire height and tire
width and is shown in percent. The aspect ratio is calculated by dividing the tire width by
the tire height.
Tire
code:
tire

code = specifies the tire type.
"R" represents radial tires; "D" represents
diagonal tires; "B" represents diagonal radial
tires.
Optionally, tires with a maximum speed of
over 149 mph (240 km/h) may have "ZR" in
the size description, depending on the
manufacturer (e.g. 245/40 ZR 18).
Rim diameter: rim diameter ? is the
diameter of the bead seat, not the diameter
of the rim flange. The rim diameter is
specified in inches (in).
Load-bearing index: load-bearing index A
is a numerical code that specifies the
maximum load-bearing capacity of a tire.
Do not overload the tires by exceeding the
specified load limit. The maximum
permissible load can be found on the
vehicle's Tire and Loading Information
placard on the B-pillar on the driver's side
(Y page 537).
Example:
The load bearing index 91 indicates a
maximum load of 1356 lb (615 kg) that the
tires can bear. For further information on the
maximum tire load in kilograms and pounds,
see ( Y page 544).
For further information on the load bearing
index, see "Load index" ( Y page 544).
Speed rating: speed rating B specifies the
approved maximum speed of the tire.
i Tire data is vehicle-specific and may
deviate from the data in the example.
Regardless of the speed rating, always
observe the speed limits. Drive carefully and
adapt your driving style to the traffic
conditions. 542
All about wheels and tires
Wheels and tires

various operating conditions, i.e. differing
load and speed conditions.
Increased vehicle weight due to optional
equipment
This is the combined weight of all standard
and optional equipment available for the
vehicle, regardless of whether it is actually
installed on the vehicle or not.
Rim
This
is
the part of the wheel on which the tire
is mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum permissible axle
weight. The actual load on an axle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicle identification plate on the B-pillar on
the driver's side.
Speed rating
The speed rating is part of the tire
identification. It specifies the speed range for
which the tire is approved.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight
of the vehicle including fuel, tools, the spare
wheel, accessories installed, occupants,
luggage and the drawbar noseweight, if
applicable. The gross vehicle weight must not
exceed the gross vehicle weight rating GVWR
as specified on the vehicle identification plate
on the B pillar on the driver's side.
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of a fully loaded vehicle (the weight of
the vehicle including all accessories,
occupants, fuel, luggage and the drawbar
noseweight, if applicable). The gross vehicle
weight rating is specified on the vehicle
identification plate on the B-pillar on the
driver's side. Maximum loaded vehicle weight
The maximum weight is the sum of:
R
the curb weight of the vehicle
R the weight of the accessories
R the load limit
R the weight of the factory installed optional
equipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa
corresponds to 1 psi. Another unit for tire
pressure is bar. There are 100 kilopascals
(kPa) to 1 bar.
Load index
In
addition to the load-bearing index, the load
index may also be imprinted on the sidewall
of the tire. This specifies the load-bearing
capacity more precisely.
Curb weight
The weight of a vehicle with standard
equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air-
conditioning system and optional equipment
if these are installed in the vehicle, but does
not include passengers or luggage.
Maximum load rating
The maximum tire load is the maximum
permissible weight in kilograms or lbs for
which a tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire.
Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two.
PSI (pounds per square inch)
A standard unit of measure for tire pressure. 546
All about wheels and tires
Wheels and tires

Aspect ratio
Relationship between tire height and tire
width in percent.
Tire pressure
This is pressure inside the tire applying an
outward
force
to each square inch of the tire's
surface. The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold.
Cold tire pressure
The tires are cold:
R if the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
R if the vehicle has been driven for less than
1 mile (1.6 km).
Tread
The part of the tire that comes into contact
with the road.
Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control, a roof rack
or a high-performance battery, are not
included in the curb weight and the weight of
the accessories.
TIN (Tire Identification Number)
This is a unique identifier which can be used
by a tire manufacturer to identify tires, for
example for a product recall, and thus identify the purchasers. The TIN is made up of the
manufacturer's identity code, tire size, tire
type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code
that
contains the maximum load bearing
capacity of a tire.
Traction
Traction is the result of friction between the
tires and the road surface.
Treadwear indicators
Narrow bars (tread wear bars) that are
distributed over the tire tread. If the tire tread
is level with the bars, the wear limit of á in
(1.6 mm) has been reached.
Occupant distribution
The distribution of occupants in a vehicle at
their designated seating positions.
Total load limit
Rated cargo and luggage load plus
68 kilograms (150 lb) multiplied by the
number of seats in the vehicle. Changing a wheel
Flat tire
Information on the procedure in the event of
a flat tire ( Y page 509). You will also find
information on

driving with MOExtended tires
in the event of a flat tire. Interchanging the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels

or tires have different dimensions.
The wheel brakes or suspension components
may also be damaged. There is a risk of
accident. Changing a wheel
547
Wheels and tires
Z