Maserati GranTurismo 2024 Owner's Manual page 48

Understanding the Vehicle
WARNING!
The temperature grade for this
tire is established for a tire that is
properly inflated and not overloaded.
2
Excessive speed, under-inflation, or
excessive loading, either separately or
in combination, can cause heat buildup
and possible tire failure.
Tire Pressure
Proper tire inflation pressure is essential
for safety and best performance of your
vehicle. The tire pressure monitoring
system "TPMS" setup on the vehicle
(see "Tire Pressure Monitoring System
(TPMS)" in this section) may alert the
driver about insufficient tire pressure
even though the driver is responsible for
checking regularly the tire pressure.
Radial tires fitted on the vehicle may
look properly inflated even when they
actually are under inflated. Do not make
a visual judgment when determining
proper inflation.
Three primary driving aspects are
affected by improper tire pressure:
46
Safety
WARNING!
• Improperly inflated tires are
dangerous.
• Under-inflation increases tire flexing
and can result in tire overheating.
•
Over-inflation reduces a tire's ability
to cushion shock. Objects on the road
and potholes can cause damage that
result in tire failure.
• Over-inflated or under-inflated tires
can affect vehicle handling and can fail
suddenly, resulting in loss of vehicle
control.
•
Unequal tire pressures can cause
steering problems.
• Unequal tire pressures from one side
of the vehicle to the other can cause
the vehicle to drift to the right or left.
• Always drive with each tire inflated to
the recommended cold tire inflation
pressure.
Economy
Improper inflation pressures may cause
uneven wear patterns to develop across
the tire tread. These abnormal wear
patterns will reduce tread life resulting
in a need for earlier tire replacement.
Under-inflation also increases tire
rolling resistance resulting in higher fuel
consumption.
Ride comfort and vehicle stability
Proper tire inflation contributes to
a comfortable ride. Over-inflation
produces a jarring and uncomfortable
ride.
Tire Pressure Checkup
The proper cold tire inflation pressure
is indicated on the table "Tire Inflation
Pressure" in section "Technical
Specifications".
Inflation pressure specified on the table
always refers to "cold tire inflation
pressure". Cold tire inflation pressure
is defined as the tire pressure after the
vehicle has not been driven for at least
three hours, or driven less than 1 mi (1.6
km) after a three hour period.
Check tire pressures more often in
case of significant outside temperature
changes, as tire pressure varies
according to temperature changes.
The pressure should be checked and if
necessary adjusted; tire wear and 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