Tire Sizing Chart
EXAMPLE: P265/50 ZR19 (100Y) XL or
265/50 ZR19 (Y100) XL
Size Designation:
P = Passenger car tire size based on
U.S. design standards
“...blank...” = Passenger car tire
based on European design standards
265 = Section width in millimeters
(mm)
50 = Aspect ratio in percent (%) —
Ratio of section height to section
width of tire
ZR = Construction Code
• Z: means a tire usable at speeds
greater than 150 mph (240 km/h)
• R: means radial construction
19 = Rim diameter in inches (in) Service Description:
100 = Load Index — A numerical
code associated with the maximum
load a tire can carry
Y = Speed Symbol — A symbol
indicating the range of speeds at
which a tire can carry a load
corresponding to its load index
under certain operating conditions.
The maximum speed corresponding
to the speed symbol should only be
achieved under specified operating
conditions (i.e., tire pressure, vehicle
loading, road conditions, and posted
speed limits)
Load Identification:
“...blank...” = Absence of any text on
the sidewall of the tire indicates a
Standard Load (SL) tire
XL = Extra Load (or reinforced) tire
LL = Light Load tire Tire Identification Number (TIN)
The TIN may be found on one or both
sides of the tire, however the date
code may only be on one side. Tires
with white sidewalls will have the full
TIN, including the date code, located
on the white sidewall side of the tire.
Look for the TIN on the outboard side
of black sidewall tires as mounted on
the vehicle. If the TIN is not found on
the outboard side, then you will find it
on the inboard side of the tire.Driving
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Tires
Driving over rough or damaged road
surfaces, as well as debris, curbs and
other obstacles can cause serious
damage to wheels, tires, and
suspension parts.
This is more likely to occur with
low-profile tires, which provide less
cushioning between the wheel and
the road.
Be careful to avoid road hazards and
reduce your speed, especially if your
vehicle is equipped with low profile
tires.
WARNING!
Overloading of your tires is
dangerous. Overloading can cause tire
failure, affect vehicle handling, and
increase the stopping distance. Use
tires of the recommended load
capacity for your vehicle. Never
overload them. Department of Transportation
Uniform Tire Quality Grades The following tire grading categories
were established by the National
Highway Traffic Safety Administration.
The specific grade rating assigned by
the tire's manufacturer in each
category is shown on the sidewall of
the tires on your vehicle.
All passenger car tires must conform
to Federal safety requirements in
addition to these grades.
Treadwear
The Treadwear grade is a comparative
rating, based on the wear rate of the
tire when tested under controlled
conditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half
times as well on the government
course as a tire graded 100. The
relative performance of tires depends
upon the actual conditions of their
use, however, and may depart
significantly from the norm due to
variations in driving habits, service
practices, and differences in road
characteristics and climate.
Traction Grades
The Traction grades, from highest to
lowest, are AAA, A, B, and C. These grades represent the tire's ability to
stop on wet pavement, as measured
under controlled conditions on
specified government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.
WARNING!
The traction grade assigned to this
tire is based on straight-ahead
braking traction tests, and does not
include acceleration, cornering,
hydroplaning, or peak traction
characteristics.
Temperature Grades
The
temperature grades are A (the
highest), B, and C, representing 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.Driving
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overall conditions should also be
checked monthly. Tire pressures
change by approximately 1 PSI (0.07
bar) per 12°F (7°C) of air temperature
change. Keep this in mind when
checking tire pressure inside a garage,
especially in winter.
Example: If garage temperature = 68°F
(20°C) and the outside temperature =
32°F (0°C) then the cold tire inflation
pressure should be increased by 3 PSI
(0.21 bar) for every 12°F (7°C) for this
outside temperature condition.
Tire pressure may increase from 2 to 6
PSI (0.13 to 0.4 bar) during operation.
DO NOT reduce this normal pressure
build-up or your tire pressure will be
too low. 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 the
valve stem and the TPMS sensor
connected to it.
Tread Wear Indicators Tread wear indicators are in the
original equipment tires to help you
determine when your tires should be
replaced.
These indicators are molded into the
bottom of the tread grooves. When the tread is worn to one of the
tread wear indicators, the tire should
be replaced.
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.
NOTE:
Maserati recommends Maserati
Genuine Tires marked with “MGT”
logo specifically designed for its
models.
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 equivalentDriving
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will monitor the actual tire pressure
in the tire.
Premium System The TPMS system uses wireless
technology with wheel rim mounted
electronic sensors to monitor tire
pressure levels. Sensors mounted to
each wheel as part of the valve stem
transmit tire pressure readings to the
receiver module.
The TPMS consists of the following
components:
• receiver module;
• four TPMS sensors;
• various TPMS messages, which
display on the instrument cluster;
• warning light
.
Tire Pressure Low Warning
The TPMS light will illuminate in
the instrument cluster and an acoustic
signal will notify that tire pressure is
low in one or more of the four tires. The instrument cluster will also display
a screenshot reporting the pressure
values of each tire with flashing low
pressure value.
Should this occur, you should stop as
soon as possible and inflate the tire/s
with the low pressure (the one/s
flashing in the instrument cluster
graphic) to the recommended cold
pressure inflation value. Once the
system receives the updated tire
pressure value, the system will automatically update, the graphic
display in the instrument cluster will
stop flashing, and the TPMS light
will turn off. The vehicle may need
to be driven for up to 20 minutes
above 15 mph (24 km/h) in order for
the TPMS to acquire and process the
updated information.
Tire Pressure System Fault
If a system fault is detected, the TPMS
light
will flash for 75 seconds and
then remain lit followed by a beeping
sound. Therewith, the instrument
cluster will display a "Service Tire
Pressure System" message for a
minimum of five seconds and then
display dashes (--) in place of the
pressure value to indicate which
sensor is ineffective.
If the ignition switch is cycled, the
sequence will repeat, in case the
system fault still persists. If the system
fault no longer exists, the TPMS light
will no longer flash, and the
"Service Tire Pressure System"
message will no longer be displayed,
and a pressure value will be displayed
in place of the dashes.
A system fault can occur due to any of
the following:
• Signal interference due to electronic
devices or driving next to facilitiesDriving
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emitting the same radio frequencies
as the TPMS sensors.
• Installing aftermarket window
tinting that contains materials that
may block radio wave signals.
• Accumulation of snow or ice around
the wheels or wheel housings.
• Using tire chains on the vehicle.
• Using wheels/tires not equipped with
TPMS sensors.
The instrument cluster will also display
a "Service Tire Pressure System"
message for a minimum of five
seconds when a system fault related to
an incorrect sensor location fault is
detected. In this case, the "Service Tire
Pressure System" message is then
followed by a graphic display with
pressure values still shown. This
indicates that the pressure values are
still being received from the TPMS
sensors but they may not be located in
the correct vehicle position. The system
still needs to be serviced as long as the
"Service Tire Pressure System" message
is displayed. Vehicles with Compact Spare Tire
• The compact spare tire does not have
a TPMS sensor. Therefore, the TPMS
will not monitor the pressure of the
compact spare tire.
• If you replace a tire having pressure
below the low-pressure warning
limit, with the compact spare tire, on
the next ignition switch cycle, the
TPMS light
will illuminate
followed by a beeping sound. In addition, the graphic in the
instrument cluster will still display a
flashing pressure value
corresponding to the compact tire
position.
• After driving the vehicle for up to 20
minutes above 15 mph (24 km/h), the
TPMS light
will flash for 75
seconds and then remain lit. The
instrument cluster will then display a
"Service Tire Pressure System"
message for a minimum of five
seconds and then display dashes (--)
in place of the pressure value.
• Each subsequent ignition switch cycle
will be followed by a beeping sound,
the TPMS light
will flash for 75
seconds and then remain lit. The
instrument cluster will then display a
"Service Tire Pressure System"
message for a minimum of five
seconds and subsequently displaysDriving
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dashes (--) in place of the pressure
value.
• Once you repair, replace or reinstall
a tire with the compact spare tire,
the TPMS will update automatically.
The TPMS light
will turn OFF and
the graphic in the instrument cluster
will display a new pressure value
instead of dashes (--), as long as no
tire pressure is below the
low-pressure warning limit in any of
the four tires. The vehicle may need
to be driven for up to 20 minutes
above 15 mph (24 km/h) in order for
the TPMS to acquire and process the
updated information.
TPMS Deactivation The TPMS can be deactivated if
replacing all four tire rims with wheel
and tire assemblies not using of TPMS
sensors, such as winter wheel and tire assemblies. After replacing all four
wheel and tire assemblies (road tires)
with tires not equipped with Tire
Pressure Monitoring System sensors,
drive the vehicle for 20 minutes above
15 mph (24 km/h). The TPMS will
chime, the TPMS light
will flash on
and off for 75 seconds and then
remain on and the instrument cluster
will display the “Service Tire Pressure
System” message and then display
dashes (--) in place of the pressure
values. Beginning with the next
ignition switch cycle, the TPMS will no
longer chime or display the “Service
Tire Pressure System” message in the
instrument cluster but dashes (--) will
remain in place of the pressure values.
To reactivate the TPMS, replace all
four wheel and tire assemblies (road
tires) with tires equipped with TPMS
sensors. Then, drive the vehicle for up to 20 minutes above 15 mph
(24 km/h). The TPMS will chime, the
TPMS light
will flash for 75 seconds
and then turn off. The instrument
cluster will then display the “Service
Tire Pressure System” message.
The instrument cluster will also display
pressure values in place of the dashes
(--). On the next ignition switch cycle
the “Service Tire Pressure System”
message will no longer be displayed as
long as no system fault exists.
Radio Frequency Transmitter -
Regulatory Information The “Regulatory Information” for all
the radio and radar frequency devices
can be consulted by accessing the
“Services” section on the website
www.maserati.com.Driving
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Fuel Requirements The engines are designed to meet all
environmental regulations and provide
excellent fuel economy and
performance when using unleaded
premium gasoline with an AKI octane
rating of 91 or above. AKI (Anti Knock
Index) is an average on the Research
Octane Number, RON, and the Motor
Octane Number, MON (RON + MON/2
gives you the AKI).
For vehicle top performance, use
unleaded premium gasoline with no
less than 93 minimum AKI octane
rating.
Poor quality gasoline can cause
problems such as hard starting,
stalling, and hesitations. If you
experience these symptoms, try
another brand of gasoline before
considering service for the vehicle at
an Authorized Maserati Dealer .
Besides using unleaded gasoline with
the proper octane rating, gasoline that
contain detergents, anti-corrosion and
stability additives are recommended.
Using gasoline that have these
additives may help improve fuel
economy, reduce emissions, and
maintain vehicle performance. CAUTION!
• Maserati strongly recommends the
use of Premium unleaded fuel ONLY.
Use of lesser grade fuel (other than
Premium) will lead to reduced
engine performance, and poor fuel
economy and can lead to the
Malfunction Indicator Light
illuminating on the instrument
cluster. Continued use of lesser grade
fuel (other than Premium fuel) can
lead to engine misfire problems and
possible catalytic converter damage.
• The anti-pollution devices of the
vehicle require unleaded fuel to be
used at all times. Under no
circumstance, not even in an
emergency, should leaded fuel be
supplied to the fuel tank, not even a
minimum quantity. This would
irreparably damage the catalytic
converters. An inefficient catalytic
converter results in noxious exhaust
emissions which damage the
environment.
Reformulated Gasoline Many areas of the country require the
use of cleaner burning gasoline,
referred to as “Reformulated Gasoline”. Reformulated gasoline
contains oxygenates and are
specifically blended to reduce vehicle
emissions and improve air quality.
Maserati supports the use of
reformulated gasoline. Properly
blended reformulated gasoline will
provide excellent performance and
durability of engine and fuel system
components.
Gasoline/Oxygenate Blends Some fuel suppliers blend unleaded
gasoline with oxygenates such as
Ethanol. Fuels blended with
oxygenates may be used in your
vehicle.
CAUTION!
DO NOT use gasoline containing
Methanol or gasoline containing more
than 10% Ethanol. Use of these blends
may result in starting and driveability
problems, damage critical fuel system
components, cause emissions to exceed
the applicable standard, and/or cause
the Malfunction Indicator Light
to
illuminate (see “Instrument Cluster” in
section “Dashboard Instruments and
Controls”. Pump labels should clearly
communicate if a fuel contains greaterDriving
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(Continued)
with proper maintenance. Have the
exhaust system inspected every time
the vehicle is raised. Have any
abnormal conditions repaired
promptly. Until repaired, drive with
all side windows fully open.
WARNING!
California Proposition 65
Operating, servicing and maintaining
a passenger vehicle or off-road vehicle
can expose you to chemicals including
such as, engine exhaust, carbon
monoxide, phthalates and lead, that
which are known to the State of
California to cause cancer and birth
defects or other reproductive harm. To
minimize exposure, avoid breathing
exhaust, do not idle the engine except
as necessary, service your vehicle in a
well-ventilated area and wear gloves
or wash your hands frequently when
servicing your vehicle. For more
information go to:
www.P65Warnings.ca.gov/passenger-
vehicle Refueling Fuel Filler Neck Access To access the fuel filler neck, the filler
door must be unlocked. From outside
the vehicle, this can only be done by
pressing the unlock
or the lock
button on the key fob RKE
transmitter, in the same way as if
opening or closing the doors. If any of
the door lock controls is pressed from
inside the vehicle, the filler door will
still remain open to allow refueling.
• Press the indicated area on the filler
door, which is located on the rear left
side of the vehicle: the filler door will
open completely. Refill the Tank The fuel filler is sealed by an internal
closing tab, which is opened by the
fuel nozzle of the service station when
refueling.
Only a nozzle of the suitable size can
open the closing tab.
• Insert the fuel nozzle fully into the
filler.
NOTE:
Only with a correct size nozzle you can
refuel.
WARNING!
• To avoid the risk of fire, do not
approach the filler with open flames
or cigarettes!
• To avoid the risk of inhaling noxiousDriving
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