2017 MERCEDES-BENZ S-Class CABRIOLET width

Step 3
RPermissible load (maximum gross vehicle weight rating from the Tire and Loading Information
placard minus the gross weight of all occupants):
1500 lbs (680 kg)Ò150 lbs (68 kg) = 1350 lbs (612kg )
Vehi cle identification plate
Even if you have calculated th etotal cargo care-
fully, you should still mak esure that th egross
vehicl eweigh trating and th egross axle weigh t
rating are no texceeded. Details can be foun don
th evehicl eidentification plat eon th eB-pillar on
th edriver' sside of th evehicl e (
Ypage 311).
Permissible Gross Vehicle Weight Ratin g
(GVWR): thegross weigh tof th evehicle, all pas-
sengers, load and trailer load/noseweight (if
applicable) must no texcee dth epermissible
gross vehicl eweight.
Gross Axle Weight Ratin g(GAWR): themaxi-
mum permissible load that can be carried by on e
axle (fron tor rear axle).
To ensure that your vehicl edoes no texcee dth e
maximum permissible value s(gross vehicl e
weigh tand maximum gross axle weigh trating),
have your loade dvehicl e(including driver, occu-
pants ,cargo, and full trailer load if applicable)
weighed on asuitable vehicl eweighbridge.
All about wheels and tires
Uniform Tire Quality Grading Stand-
ards
Overview of Tire Quality Grading Stand-
ards
Uniform Tir eQuality Grading Standards are U.S.
governmen tspecifications. Thei rpurpose is to
provide drivers wit huniform reliable information
on tir eperformance data. Tir emanufacturers have to grad
etires usin gthree performance fac -
to rs: : tread wear grade, ;traction grad eand
= temperature grade. Thes eregulation sdo no t
apply to Canada. Nevertheless, all tires sold in
North Americ aare provide dwit hth ecorre-
spondin gqualit ygrading markings on th eside -
wall of th etire.
Quality grades can be found, wher eapplicable,
on th etir esidewall between tread shoulder and
maximum sectio nwidth.
Example :
RTreadwear grade: 200
RTraction grade: AA
RTemperaturegrade: A
All passenger car tires must conform to th estat-
utory safet yrequirements in addition to these
grades.
iThe actual value sfor tires are vehicle-spe-
cific and may deviat efrom th evalue sin th e
illustration .
Treadwear
The treadwear grad eis acomparative rating
based on th ewear rat eof th etir ewhen tested
under controlled condition son aspecifie dU.S.
governmen tcourse .Fo rexample , atiregraded
15 0would wear on eand one-half times as well
on th egovernmen ttest track as atir egraded
100.
The relative performance of tires depend supon
th eactual condition sof their use, however ,and
may depar tsignificantly from th enorm due to
variation sin driving habits, servic epractices
and differences in road characteristics and cli -
mate.
Traction
GWARNIN G
The traction grad eassigned to this tir eis
based on straight-ahead braking traction
tests, and does no tinclude acceleration ,cor-
nering, hydroplaning ,or peak traction char-
acteristics.
314All about wheels and tires
Wheels and tires

tire load rating and speed rating required for
your vehicle.
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 speed of over
149 mph (240 km/h ) ma
y 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 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 311).
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 317).
For further information on the load bearing
index, see "Load index" (
Ypage 317).
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 th
e traffic conditions.
Summer tires
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 speed of
over 149 mph (240 km/h) may have "ZR" in
the size description, depending on the man-
ufacturer (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,
316All aboutwheels an d tires
Wheels and tires

following specifications from the U.S. govern-
ment. The ratings are molded into the sidewall of
the tire.
Recommended tire pressures
The recommended tire pressure applies to the
tires mounted at the factory.
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold
tires on a fully loaded vehicle and for the maxi-
mum permissible vehicle speed.
The tire pressure table contains the recommen-ded pressures for cold tires for various operat-
ing conditions, i.e. differing load and speed con-
ditions.
Increased vehicle weight due to optional
equipment
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 gross axle weight
rating. 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 vehi-
cle weight rating GVWR as specified on the vehi-
cle 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:
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
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.
All about wheels and tires319
Wheels and tires
Z

Warning symbols:indicate:
RPossible dangers
RHaving service work carried out at a qualified
specialist workshop
Filling capacities
ModelRefrigerant
All models23.3 ± 0.4 oz
(660 ± 10 g)
ModelPAG oil
All models3.9 oz
(110 g)
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.
Dimensions and weights
Model:Opening height
All models65.5 in (1663 mm)
Mercedes-AMG
vehicles
Vehicle length198.6 in (5044 mm)
Vehicle width
including exterior
mirrors83.0 in (2108 mm)
Vehicle height56.2 in (1428 mm)
Wheelbase115.9 in (2945 mm)
Turning radius39.0 ft (11.90 m)
Maximum trunk
load220 lb (100 kg)
All other models
Vehicle length197.9 in (5027 mm)
Vehicle width
including exterior
mirrors83.0 in (2108 mm)
Vehicle height55.8 in (1417 mm)
Wheelbase115.9 in (2945 mm)
Turning radius38.1 ft (11.60m)
Maximum trunk
load220 lb (100 kg)
334Vehicle data
Technical data