Maserati Quattroporte, Owner'S Manual

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Maintenance and Care
Wheels Maintenance
Tires Maintenance
CAUTION!
To obtain the best performances and
the longest mileage from the tires,
take following precautions during the
first 500 km (310 mi):
•
do not drive at the vehicle’s
maximum speed;
• drive at low speed on curves;
• avoid sudden steering;
• avoid sudden braking;
• avoid sudden acceleration;
•
do not drive at high speeds for too
long.
The tires inflation pressure must
correspond to the prescribed values
(
: chapter "Tire Inflation Pressure"
in section "Technical Specifications")
and should be checked only when
the tires have cooled down. In fact,
the pressure increases as the tire
temperature progressively increases.
Never reduce the pressure if tires are
hot (
: chapter "Tires Information"
chapter in section "Safety").
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 1.6 mm (0.06 in) or 4
mm (0.16 in) for winter, all-season
and snow tires, at that point the
wear indicators on the tire will
be visible (
: chapter “Tires