2019 MASERATI GRANTURISMO CONVERTIBLE tire type

In the event of a side impact, the
Occupant Restraint Controller (ORC)
processes the signals coming from side
sensors and activates air bag
deployment when necessary.
The air bag deploys almost
instantaneously, placing itself between
the occupants and the side of the
vehicle. The air bag deflates
immediately afterward.
In the case of low-severity side
collisions (for which the restraining
action of the seat belts provides
adequate protection), the air bags do
not deploy.
The side air bags are not a substitute
of the seat belts but rather act in
combination with them. As a
consequence, the seat belts must
always be worn as provided for by
applicable legislation in Europe and in
most non-European countries.
WARNING!
• If the
warning light comes on
while driving (fault signal), stop the
vehicle and contact an Authorized
Maserati Dealer to have the system
checked.
• In the event of a collision with
consequent air bag deployment, contact an Authorized Maserati
Dealer for replacement of the entire
safety system, Occupant Restraint
Controller (ORC), seat belts,
pretensioners, and to have the
vehicle electrical system checked.
• Any and all inspections, repairs and
replacements regarding the air bag
must be performed by an Authorized
Maserati Dealer.
NOTE:
• T
o scrap the vehicle, please contact
an Authorized Maserati Dealer in
order to have the air bag system
deactivated.
• If the vehicle is sold, the new owners
must read the above described
instructions for use and warnings on
this “Owner’s Manual” that is an
integral part of the car.
Occupant Restraint Controller
(ORC) The Occupant Restraint Controller
(ORC) determines if deployment of the
front air bags and/or side air bags in a
frontal or side collision is required.
Based on the impact sensor's signals,
the central electronic ORC deploys the
front air bags, the side air bags and seat belt pretensioners, as required,
depending on the severity and type of
impact.
The ORC monitors the readiness of the
electronic parts of the air bag system
whenever the key in the ignition
switch is in the MAR (ON) position. If
the key is in the STOP (OFF) position,
in the ACC position, or not active, the
air bag system is not activated and the
air bags will not inflate.
The ORC contains a backup power
supply system that may deploy the air
bags even if the battery has low power
or it becomes disconnected prior to
deployment. When starting the
vehicle, ORC turns on the
air bag
warning light on the instrument
cluster for approximately 4 to 8
seconds for a test.
After the test, the
air bag warning
light will turn off. If the ORC, during
the diagnosis phase detects a
malfunction that could affect the air
bag system, it turns on the
air bag
warning light and the “Airbag failure
go to dealer” message either
momentarily or continuously. The
diagnostics also record the nature of
the malfunction. A beep will sound if
the
air bag warning light
illuminates again after initial startup.Before Starting
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Installing Child Restraint
Systems using the Vehicle Seat
Belt equipped with ALR All the passenger seat belts are
equipped with an Automatic Locking
Retractor (ALR) to secure child
protection through a Child Restraint
System (CRS). These types of seat belts
are designed to keep the lap portion
of the seat belt tight around the child
restraint seat avoiding to use a locking
clip.
The ALR will make a ratcheting noise
if the entire belt is pulled out of the
retractor in order to enable the belt to
retract subsequently. For additional
information on ALR, see “Using Seat
Belt in Automatic Locking Retractor
(ALR) Mode” in “Occupants Restraint
Systems” in this section.
To install a Child Restraint System with
ALR, pull enough of the belt out of
the retractor leading it through the
belt path of the protection device.
Slide the latch into the buckle until it
clicks, then remove the entire safety
belt from the retractor in order to
rewound. While rewinding a click will
indicate the safety belt is now in
Automatic Locking mode.
Exert then a traction on the exceeded
lap section of the belt in order to tighten it around the child restraint
seat. All seat belts will loosen over
time, it is therefore necessary to check
them periodically and set them
properly.
Lower Anchors and Tether for
Children (LATCH) Your vehicle's rear outboard seats are
all equipped with the child restraint
anchorage system called LATCH.
The LATCH system allows the child
restraint systems to be fixed without
using the vehicle's seat belts, instead
fixing the child restraint system to the
vehicle structure, using lower
anchorages shown in picture.
LATCH-Compatible child restraint
systems are now available. You should
never install LATCH child seats so that
two seats share a common lower
anchorage. If your child restraints are not
LATCH-Compatible, install the
restraints using the vehicle's seat belts.
NOTE:
• You can install a standard and a
LATCH system child seat at the same
time (one in each outer rear seat).
• No more than two standard child
seats or two LATCH system type child
seats can be installed on the rear
seats.
• Only standard type child seats can be
mounted on the front passenger
seat.
Installing a LATCH- Compatible Child
Restraint System
The lower LATCH anchorages are
“U-shaped” metal rings located on the
rear seat where the cushion meets the
seatback just below the symbol shown
in the picture, but are not visible. You
will find them if you run your finger
along the intersection of the seatback
and seat cushion surfaces.
Follow the child restraint
manufacturer's instructions provided
with the child restraint system.
The lower Isofix anchorages are “U”
metal rings located on the rear seat in
the area between cushion and
seatback, but are not visible. You willBefore Starting
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WARNING!
The wet performance (aquaplaning
resistance) will decrease
proportionally to the thickness of the
tread.
Tires Durability
The service life of a tire depends on
various factors including, but not
limited to:
• driving style;
• tire pressure;
• distance driven.
WARNING!
Tires and the spare tire (if equipped)
should be replaced after six years,
regardless of the remaining tread.
Failure to follow this warning could
result in tire failure.
Replacement Tires
NOTE:
In order to maintain high performance
and safety level under all driving
conditions, Maserati strongly
recommends to use tires equivalent to
the originals in size, quality and
performance when replacement is
needed.
For the size designation of your tire
see the label on the driver's side rear
door pillar or see table “Wheels” in
section “Features and Specifications”.
The “Load Index” and “Speed Symbol”
for your tire will be found on the
original equipment tire sidewall.
It is recommended to replace the two
front tires or two rear tires as a pair.
Replacing just one tire can seriously
affect your vehicle’s handling.
If you ever replace a wheel assembly,
make sure that the wheel’s
specifications (valve, TPMS sensor and
tire) match those of the original
wheels. Failure to use equivalent
replacement tires may adversely affect
the safety, handling, and ride of your
vehicle.
Your Authorized Maserati Dealer is
available to provide suggestions as to the types of tires most suited to the
use foreseen by the Customer.
WARNING!
• Do not use a tire, wheel size or
rating other than that specified for
your vehicle. Some combinations of
unapproved tires and wheels may
change suspension dimensions and
performance characteristics,
resulting in altered steering,
handling, and braking operations of
the vehicle. This can cause
unpredictable handling and stress to
steering and suspension
components. Use only the tire and
wheel sizes with load ratings
appointed for your vehicle.
• Never use a tire with a smaller load
index or capacity, other than what
was originally equipped on your
vehicle. Using a tire with a smaller
load index could result in tire
overloading and failure.
• Always check the maximum speed
rating on the tire sidewall on any
tire on the vehicle.
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•Never exceed the maximum speed
rating of the tires. Risk of accident
and serious personal injury due to
excessive speed.
• Failure to equip your vehicle with
tires having adequate speed
capability can result in tire failure.
CAUTION!
Replacing original tires with tires of a
different size may result in false
speedometer and odometer readings.
Winter Tires
These tires are specially designed for
driving on snow and ice and are fitted
to replace the ones supplied with the
vehicle. Winter or all-season tires can
be identified by the M+S (Mud &
Snow) or 3PMSF (3 Peaks Mountain
Snow Flake) designation on the tire
sidewall.
Before mounting winter tires, contact
an Authorized Maserati Dealer to
receive the technical information
necessary to advise you on wheel and
tire compatibility.
As to the type of tires to use, inflation
pressures and winter tires
specifications, carefully follow the
indications as reported in the “Technical Data” and “Tire Inflation
Pressure” chapters in section “Features
and Specifications”.
WARNING!
The standard tires profile and rubber
mixture are optimized for wet and dry
driving conditions. Standard tires may
not prove favorable for snow
conditions.
NOTE:
Snow
tires should have the same load
capacity as original equipment tires
and should be mounted on all four
wheels.
Snow Chains
Maserati approved traction devices (or
snow chains) may be used to improve
traction on compacted snow in heavy
snow conditions.
The use of snow chains is specified by
local regulations of each country.
Use snow chains of reduced
dimensions, with a maximum
projection of 0.35 in (9 mm) beyond
the tire tread.
Maserati recommended to use snow
chains KONIG, type “Supermagic”. The snow chains may be fitted only on
rear wheel tires.
Please, contact your Service for further
information.
Check the snow chain tension after
driving for a distance of about 55 yd
(50 m) with the chains fitted.
With the snow chains fitted, it is
advisable to deactivate the ESC system
(see chapter “Drive Mode” in this
section).
CAUTION!
• The use of non-recommended snow chains may damage the vehicle.
• Broken chains can cause serious damage. Stop the vehicle
immediately if noise occurs that
could indicate chain breakage.
Remove the damaged parts of the
chain before further use.
• Do not exceed 30 mph (50 km/h).
• Drive cautiously and avoid severe turns and large bumps, especially
with a loaded vehicle.
• Avoid holes in the road, do not drive over steps or sidewalks and do not
drive on long stretches without
snow. This will prevent damage to
the vehicle and the roadbed.
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that prevent the TPMS from
functioning properly. Always check the
TPMS malfunction telltale after
replacing one or more tires or wheels
on your vehicle to ensure that the
replacement or alternate tires and
wheels allow the TPMS to continue to
function properly.
General Information
The Tire Pressure Monitoring System
(TPMS) will warn the driver of a low
tire pressure according to the vehicle
recommended cold pressure indicated
on the table “Tire Inflation Pressure”
in section “Features and
Specifications” and on the label
applied on the driver's side at the base
of the rear door pillar.
The cold tire inflation pressure must
not exceed the maximum inflation
pressure molded into the tire sidewall.
Check “Tires – General Information” in
section “Driving” for information on
how to properly inflate the tires.
The tire pressure will also increase as
the vehicle is driven - this is normal
and there is no adjustment required
when this occurs.
The TPMS will warn the driver of a low
tire pressure if the tire pressure falls
below the low-pressure warning limit
for any reason, including lowtemperature effects and natural
pressure loss of the tire.
The TPMS will continue to warn the
driver of low tire pressure as long as
the condition persists and will not turn
off until the tire pressure is equal or
above the recommended cold
inflation pressure.
The TPMS monitors the tire pressure
by means of special sensors fitted
inside the wheel rims, in position with
the inflation valve.
These sensors transmit a signal that is
detected by the antenna integrated in
the ECU.
The ECU processes this information
and, via the CAN line, transmits a
series of tire pressure data and system
errors, if any, to the instrument cluster.
The display may show the information
received by means of specific screen
pages, which can be recalled by
pressing briefly the "MODE" button
(see "TFT Display: Controls" in chapter
"Instrument Cluster" of the section
Dashboard Instruments and
Controls").
WARNING!
The TPMS warns the driver that the
tire pressure has decreased. This
warning does not exempt the driver
from periodically checking the tires
and from complying with the
prescribed tire pressure levels.
CAUTION!
• The TPMS has been optimized for the original equipment tires and
wheels. TPMS pressures and warning
have been established for the tire
size equipped on your vehicle.
Undesirable system operation or
sensor damage may occur when
using replacement equipment that is
not of the same size, type, and/or
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asphalt is significantly reduced. This
means that braking distances increase
considerably and road grip decreases.
Some advices for driving in the rain
are listed below.
• Reduce your speed and keep agreater safety distance from the
vehicles in front of you. High speed
may result in a loss of vehicle
control.
• When driving on wet or slushy roads, it is possible for a wedge of water to
build up between the tire and road
surface. This is known as
aquaplaning and may cause partial
or complete loss of vehicle control
and stopping ability. To reduce this
possibility: slow down if the road has
standing water or puddles.
• Heavy rain substantially reduces visibility. In these circumstances, even
during the day, turn on the low
beams, to be more visible to other
drivers.
• Set the air conditioning and heating system controls on the defogging
function, in order to avoid any
visibility problem.
• Periodically check the conditions of the windshield wiper blades. • In low grip conditions use “ICE”
drive mode (see chapters “Drive
Mode” in this section).
Driving in Fog
If the fog is dense, avoid traveling if
possible.
When driving in mist, blanket fog or
when there is the possibility of banks
of fog, please consider some advices
listed below.
• Keep a moderate speed.
• Even in daytime, turn on the low beams and rear fog lights. Do not
use the high beams.
• Remember that fog creates dampness on the asphalt and thus
any type of maneuver is more
difficult and braking distances are
extended.
• Keep a safe distance from the vehicle in front of you.
• Avoid sudden changes in speed as much as possible.
• Whenever possible, avoid overtaking.
• If you are forced to stop the vehicle (breakdowns, impossibility of
proceeding due to poor visibility,
etc.), first of all, try to stop off of the
travel lane. Then turn on the hazard warning flashers and, if possible, the
low beams.
• Sound the horn rhythmically if you hear another vehicle approaching.
• When you get out of the vehicle, put on the high-visibility vest (if
equipped).
CAUTION!
Be aware that rear fog lights can
bother the drivers following your
vehicle: when visibility is back to
normal, turn off these lights.
Driving in the Mountains
Mountain
roads usually have many
narrow turns and curves, tunnels and
steep uphill or downhill slopes: please
consider some advices listed below.
• Drive at a moderate speed, avoid “cutting” corners.
• When driving inside a tunnel in daylight turn on the low beams in
advance; avoid high beams and be
aware of the rapid brightness
change. Avoid abrupt maneuvers
that could be dangerous for the
following vehicle.
• Never coast downhill with the engine off or in neutral, and never
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Insufficient tire inflating pressure can
cause tire overheating and possible
internal damage, which may even lead
to the tire destruction.
CAUTION!
After inspecting or adjusting the tire
pressure, always reinstall the valve
stem cap. This will prevent moisture
and dirt from entering the valve stem,
which could damage it.
Impacts with curbs, holes, and
obstacles
in the road, and prolonged
trips on rough roads can cause tire
damage which may not be visible to
the naked eye.
Check your tires regularly for any signs
of damage (e.g. scratches, cuts, cracks,
bulges, etc.). If sharp objects penetrate
the tires, they can cause structural
damage which is only visible when the
tire is removed.
In any case, any possible damage must
be inspected by an experienced tire
fitter, as it may seriously reduce the
tire life.
Remember that tires deteriorate with
time, even if used little or not at all.
Cracks in the tire tread and sides,
alongside possible bulging, are a sign
of deterioration.
WARNING!
• Check the inflating pressure of the
tires when cold, at least every two
weeks and before long trips.
• Have the old tires inspected by an
experienced technician, to make sure
they can still be used safely. If the
same tire has been on your vehicle
for 4 or 5 years, have it inspected
anyway by an experienced
technician.
• Never fit tires of uncertain origin.
• “Directional” tires have an arrow on
their side showing the rolling
direction. To keep the best
performance when replacing a tire,
make sure that the rolling direction
corresponds to the one shown by
the arrow.
• During the tire life, the rolling
direction used for the first fitting
shall always be observed, also in
case of “nondirectional” tires.
• Check the depth of the tire tread at
regular intervals. The minimum
allowed value is 0.06 in (1,6 mm) at
that point the wear indicators on the
tire will be visible (see “Tires –
General Information” in section “Driving”). The thinner is the tread,
the greater is the risk of skidding.
• Drive carefully on wet roads to
decrease the risk of aquaplaning.
Winter Tires
These
tires are specially designed for
driving on snow and ice and are fitted
to replace the ones supplied with the
vehicle.
The features of these tires are
significantly reduced in winter when
tread depth is less than 0.157 in (4
mm). In this case, they should be
replaced.
The specific features of the winter tires
lead to lower performance under
normal environmental conditions or
on long highway trips, compared to
the standard tires.
Therefore, their use should be limited
to the situations and performance for
which they have been type-approved.
The Authorized Maserati Dealer can
provide all necessary information
about fitting winter tires on the
vehicle.
Maintenance and Care
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264

Brakes
Self-ventilating disc brakes on the four
wheels.
• Front disc diameter: 14.1 in (360mm).
• Rear disc diameter: 13 in (330 mm).
• 6-piston front brake caliper (Dual-cast technology).
• 4-piston rear brake caliper.
The Electric Parking Brake (EPB) acts
on the rear wheels.
Transmission
Electro-hydraulically controlled
automatic transmission with 6 gears
(plus reverse), torque converter,
lock-up clutch and anti-slip function.
TRANSAXLE-type transmission.
Traction system equipped with rear
self-locking differential.
Suspension
Front and rear articulated
quadrilateral suspensions.
Skyhook adjustable damping
suspension (optional on MC version)
that allows the driver to choose two
settings for the shock absorbers,
depending on the road surface
conditions, speed and comfort.
Steering
Hydraulic speed-sensitive steering with
cooling exchanger system.
Steering diameter = 11.7 yd (10,7 m).
No. of steering wheel turns = 1.5 (to
the left and right).
Wheels
NOTE:
In order to maintain high performance
and safety level, Maserati
recommends to use tires equivalent to
the original size.
WARNING!
• The maximum speed reachable with
the tires (including winter tires) is
indicated by the tire manufacturer.
Always comply with the regulations
in force in the Country you are
driving in.
• Never exceed the maximum speed
indicated for the tires (including
winter tires): failure to respect the
max. speed may damage these tires.
Danger: risk of accident!
CAUTION!
• While respecting the specified sizes, for the safe operation of the vehicle
it is also essential that it is equipped
with the same brand and type of
tires on all wheels.
• Do not use an inner tube with Tubeless tires.
Standard Wheel Dimension
Light alloy rims 20” x 8.5J (front)
20” x 10.5J
(rear)
- Front tires 245/35 ZR 20
- Rear tires 285/35 ZR 20
- Front winter tires 245/35 ZR 20
- Rear winter tires 285/35 ZR 20
Light alloy spare rim
(optional) 18”x6J
- Spare tire 175/55 R 18
Features and Specifications
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