2018 MERCEDES-BENZ AMG GT COUPE load capacity

Replacing...................................... .276
Service life ..................................... 259
Sidewall (definition) ....................... 275
Speed rating (definition) ................ 275
Storing ...........................................2 77
Structure and characteristics
(definition) ..................................... 274
Summer tires in winter .................. 260
Temperature .................................. 270
TIN (Tire Identification Number)
(definition) ..................................... 276
Tire bead (definition) ......................2 75
Tire pressure (definition) ................ 275
Tire pressures (recommended) ...... 274
Tire size (data) ............................... 280
Tire size designation, load-bearing
capacity, speed rating .................... 271
Tire tread ....................................... 259
Tire tread (definition) ..................... 275
Total load limit (definition) ............. 276
Traction ......................................... 270
Traction (definition) ....................... 276
Tread wear ..................................... 270
Uniform Tire Quality Grading
Standards ...................................... 269
Uniform Tire Quality Grading
Standards (definition) .................... 274
Wear indicator (definition) ............. 276
Wheel and tire combination ........... 280
Wheel rim (definition) .................... 274
see Flat tire
Tool
see Vehicle tool kit
Touchpad
Changing the station/music
track .............................................. 207
Character suggestions ................... 206
Deleting characters ....................... 206
Entering a space ............................ 206
Entering characters ....................... 206
Gesture control .............................. 206
Handwriting recognition ................ 206
Operating the touchpad ................. 206
Overview ........................................ 206
Quick access for Audio .................. 207
Switching ....................................... 206
Switching input line ....................... 206 Tow-starting
Emergency engine starting ............ 256
To

wing away
Important safety guidelines ........... 254
Installing the towing eye ................ 255
Removing the towing eye ............... 255
Transporting the vehicle ................ 256
With both axles on the ground ....... 255
Towing eye ......................................... 245
Traction system
see ETS (Electronic Traction System)
Traffic reports
see also Digital Operator's Man-
ual .................................................. 204
Transmission
Driving tips .................................... 115
Selector lever ................................ 112
see Automatic transmission
Transmission position display ......... 114
Transmission positions
General notes ................................ 112
Overview ........................................ 113
Transporting the vehicle .................. 256
Trim pieces (cleaning instruc-
tions) .................................................. 243
Trip computer (on-board com-
puter) .................................................. 157
Trip odometer
Calling up ....................................... 156
Resetting (on-board computer) ...... 157
Trunk load (maximum) ...................... 288
Trunk partition .................................. 215
Turn signals
Display message ............................ 180
Switching on/off .............................. 92
Two-way radio
Frequencies ................................... 282
Installation ..................................... 282
Transmission output (maximum) .... 282
Type identification plate
see Vehicle identification plate
U
UnlockingEmergency unlocking ....................... 72
From inside the vehicle (central
unlocking button) ............................. 71
20Index

exceed XXX kg or XXX lbs." on your vehicle’s
Tire and Loading Information placard.
XStep 2:Determine the combined weight of
the driver and passengers that will be riding in your vehicle.
XStep 3: Subtract the combined weight of the
driver and passengers from XXX kilograms or
XXX lbs.
XStep 4: The resulting figure equals the avail-
able amount of cargo and luggage load capa- city. For example, if the "XXX" amount equals
1400 lbs and there will be five 150-lb pas-
sengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is
650 lbs (1400 - 750 (5 x 150) = 650 lbs).
XStep 5:
Determine the combined weight of
luggage and cargo being loaded on the vehi-
cle. That weight may not safely exceed the
available cargo and luggage load capacity cal- culated in step 4.
Example: steps 1 to 3
The following table shows examples of how to calculate total and cargo load capacities with varying
seating configurations and different numbers and weights of vehicle occupants. The following
examples use a load limit of 1500 lbs (680 kg). This is for illustration purposes only.Make sure
you are using the actual load limit for your vehicle stated on your vehicle's Tire and Loading Infor-
mation placard (
Ypage 266).
The higher the weight of all the vehicle occupants, the smaller the maximum load for luggage.
Step 1
Example 1Example 2Example 3
Combined maximum
weight of vehicle occu-
pants and load (data
from the Tire and Load-
ing Information plac-
ard)1500 lbs (680 kg)1500 lbs (680 kg)1500 lbs (680 kg)
Step 2
Example 1Example 2Example 3
Number of people in
the vehicle (driver and
occupants)531
Distribution of the
occupantsFront: 2
Rear: 3Front: 1
Rear: 2Front: 1
268Loading the vehicle
Wheels and tires

Tire labeling
Overview
:Uniform Tire Quality Grading Standard
(Ypage 274)
;DOT, Tire Identification Number
(Ypage 273)
=Maximum tire load (Ypage 273)
?Maximum tire pressure (Ypage 263)
AManufacturer
BTire material (Ypage 274)
CTire size designation, load-bearing capacity
and speed rating (Ypage 271)
DLoad index (Ypage 273)
ETire name
The markings described above are on the tire in
addition to the tire name (sales designation) and
the manufacturer's name.
iTire data is vehicle-specific and may deviate
from the data in the example.
Tire size designation, load-bearing
capacity and speed rating
GWARNING
Exceeding the stated tire load-bearing capa-
city and the approved maximum speed could
lead to tire damage or the tire bursting. There is a risk of accident.
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
ALoad bearing index
BSpeed 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 descrip-
tion (as shown above): these are passenger
vehicle tires according to European manufac-
turing standards.
If "P" precedes the size description: these are
passenger vehicle tires according to U.S. man-
ufacturing standards.
If "LT" precedes the size description: these are
light truck tires according to U.S. manufacturing
standards.
If "T" precedes the size description: compact
emergency wheels with high tire pressure that
are only designed for temporary use in an emer-
gency.
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 calcula-
ted by dividing the tire width by the tire height.
Tire code: tire code=specifies the tire type.
"R" represents radial tires; "D" represents diag-
onal tires
; "B" represents diagonal radial tires.
Optionally, tires with a maximum design speed
of over 149 mph (240 km/h) may have "ZR" in
All about wheels an d tires271
Wheels and tires
Z

the size description, depending on the manu-
facturer (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 indexAis 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 (
Ypage 266).
Example:
Load-bearing index 91 indicates a maximum
load of 1,356 lb (615 kg) that the tires can bear.
For further information on the maximum tire
load in kilograms and lbs, see (
Ypage 273).
For further information on the load bearing
index, see "Load index" (
Ypage 273).
Speed rating: speed ratingBspecifies the
approved maximum speed of the tire.
iTire 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.
Summer ti
res
IndexSpeed rating
Qup to 100 mph (160 km/h)
Rup to 106 mph (170 km/h)
Sup to 112 mph (180 km/h)
Tup to 118 mph (190 km/h)
Hup to 130 mph (210 km/h)
Vup to 149 mph (240 km/h)
Wup to 168 mph (270 km/h)
Yup to 186 mph (300 km/h)
ZR...Yup to 186 mph (300 km/h)
ZR...(..Y)over 186 mph (300 km/h)
ZRover 149 mph (240 km/h)
ROptionally, tires with a maximum design
speed of over 149 mph (240 km/h) may have "ZR" in the size description, depending on the
manufacturer (e.g. 245/40 ZR18).
The service specification is made up of load-
bearing index Aand speed rating B.
RIf the size description of your tire includes
"ZR" and there are no service specifications,
ask the tire manufacturer in order to find out
the maximum design speed.
If a service specification is available, the max-
imum speed is limited according to the speed
rating in the service specification. Example:
245/40 ZR18 97 Y.In this example, "97 Y" is
the service specification. The letter "Y" rep-
resents the speed rating. The maximum
design speed of the tire is limited to 186 mph
(300 km/h).
RThe size description for all tires with maxi-
mum design speeds of over 186 mph
(300 km/h) must include "ZR", andthe ser-
vice specification must be given in brackets.
Example: 275/40 ZR 18 (99 Y). Speed rating
"(Y)" indicates that the maximum design
speed of the tire is over 186 mph (300 km/h).
To find out the maximum design speed, ask
the tire manufacturer.
All-weather tires and winter tires
IndexSpeed rating
Q M+S1up to 100 mph (160 km/h)
T M+S1up to 118 mph (190 km/h)
H M+S1up to 130 mph (210 km/h)
V M+S1up to 149 mph (240 km/h)
iNot all tires with the M+S marking provide
the driving characteristics of winter tires. In
addition to the M+S marking, winter tires also
have the isnowflake symbol on the tire
wall. Tires with this marking fulfill the require-
ments of the Rubber Manufacturers Associa-
tion (RMA) and the Rubber Association of
Canada (RAC) regarding the tire traction on
snow. They have been especially developed
for driving on snow.
An electronic speed limiter prevents your vehi-
cle from exceeding a speed of 130 mph
(210 km/h).
1Or M+S ifor winter tires.
272All about wheels and tires
Wheels and tires

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 with fuel, tools, the spare wheel,
accessories installed, vehicle occupants, lug-
gage 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 permitted gross
weight of the fully laden vehicle (weight of the
vehicle including all accessories, vehicle occu-
pants, fuel, luggage and the drawbar nose-
weight 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:
Rthe curb weight of the vehicle
Rthe weight of the accessories
Rthe load limit
Rthe weight of the factory installed optional
equipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa corre-
sponds to 1 psi. Another unit for tire pressure is
bar. 100 kilopascals (kPa) are the equivalent of
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
of the tire 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 sys-
tem and optional equipment if these are instal-
led in the vehicle, but does not include passen-
gers or luggage.
Maximum load rating
The maximum tire load is the maximum permis-
sible 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.
Aspect ratio
Relationship between tire height and tire width
in percent.
Tire pressure
This is pressure inside the tire applying an out-
ward force to each square inch of the tire's sur-
face. 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:
Rif the vehicle has been parked with the tires
out of direct sunlight for at least three hours
and
Rif the vehicle has not been driven further 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.
All about wheels and tires275
Wheels and tires
Z

RBefore raising the vehicle, secure it from roll-
ing away by applying the parking brake and
inserting wheel chocks. Do not disengage the
parking brake while the vehicle is raised.
RThe jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a large,
flat, load-bearing underlay must be used. On a
slippery surface, a non-slip underlay must be
used, e.g. rubber mats.
RDo not use wooden blocks or similar objects
as a jack underlay. Otherwise, the jack will not
be able to achieve its load-bearing capacity
due to the restricted height.
RMake sure that the distance between the
underside of the tires and the ground does not
exceed 1.2 in (3 cm).
RDo not place your hands or feet under the
raised vehicle.
RDo not lie under the vehicle.
RDo not start the engine when the vehicle is
raised.
RNever open or close a door or the tailgate
when the vehicle is raised.
RMake sure that no persons are present in the
vehicle when the vehicle is raised.
Vehicles with hub caps: the hub cap covers
the wheel bolts. Before you can unscrew the
wheel bolts, you must remove the hub cap.
XTo remove: take socket;and lug wrench
= from the vehicle tool kit (Ypage 245).
XPosition socket ;on hub cap :.
XPosition lug wrench =on socket ;.
XUsing lug wrench =, turn hub cap:coun-
ter-clockwise and remove it.
XTo install: before installing, check hub cap :
and the wheel area for soiling and clean if
necessary.
XPut hub cap :in position and turn until it is in
the right position.
XPosition socket ;on hub cap :.
XAttach lug wrench =to socket ;and
tighten hub cap :.
The tightening torque must be
18 lb-ft (25 Nm).
iNote that the hub cap should be tightened
to the specified torque of 18 lb-ft (25 Nm).
Mercedes-Benz recommends that you have
the hub cap installed at a qualified specialist
workshop.
XUsing lug wrench =, loosen the bolts on the
wheel you wish to change by about one full
turn. Do not unscrew the bolts completely.
The jacking point is centered between the front
and rear wheel arches (arrow).
278Changing a wheel
Wheels and tires

Do not use distilled or de-ionized water. Other-
wise, the level sensor may give a false reading.
At temperatures above freezing:
XFill the washer fluid reservoir with a mixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing:
XFill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
iAdd windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member. Further information can be found in
the currently valid service information.
Service work, such as refilling with refrigerant or
replacing component parts, may only be carried
out by a qualified specialist workshop. All appli-
cable regulations must be adhered to, SAE
standard J639 included.
Always have work on the climate control system
carried out at a qualified specialist workshop.
Refrigerant instruction label
Example: refrigerant instruction label
:
Warning symbol
;Refrigerant filling capacity
=Applicable standards
?PAG oil part number
AType of refrigerant
Warning symbol :advises you about:
RPossible dangers
RHaving service work carried out at a qualified
specialist workshop
Filling capacities
Missing values were not available at time of
going to print.
All modelsCapacity
Refrigerant22.9 ± 0.4 oz
(650 ± 10 g)
PAG oil4.2 oz
(120 g)
Mercedes‑AMG
GT CCapacity
Refrigerant
PAG oil
Vehicle data
General notes
Please note that for the specified vehicle data:
RThe heights specified may vary as a result of:
-tires
-load
-condition of the suspension
-optional equipment
Roptional equipment reduces the maximum
payload
288Vehicle data
Technical data