Maserati GranTurismo Sport 2015, Owner'S Manual

Page: 168 / 242

5
168
Temperature
The temperature grades are “A” (the
highest), “B”, and “C”, representing
the tire 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 tire to
deteriorate and can reduce tire life.
In addition, 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 Safety Standard No.
109. Grades “B” and “A” represent
higher levels of performance on
the laboratory test wheel than the
minimum required by law.
The temperature grade for
this tire is established for a
tire that is properly inflated
and not overloaded. Excessive speed,
underinflation, or excessive loading,
either separately or in combination,
can cause heat buildup and possible
tire failure.
Other tire markings
Manufacturer’s name.
Tire model.
Size information.
Example:
245 = nominal section width in mm.
35 = height of tire cross-section
expressed as percentage of width
R = radial construction
20 = rim diameter in inches.
ZR= speed rating indicating the speed
at which the tire can carry the load
corresponding to the load capacity
index.
Tire placard/label
The tire and loading Information label
stuck on the driver’s door jamb specifies
the correct size and pressure of tires
to be used on the GranTurismo. It also
specifies the total weight the car can
carry, called the car capacity weight.
This includes the weight of the driver,
passenger and luggage.
For tire pressure information, refer also
to the ‘Technical Data’ section of this
manual.
Also found on the driver’s door jamb is
the Certification label, which stipulates
the Gross Vehicle Weight Rating
(GVWR). The GVWR includes the weight
of the car, occupants, fuel and luggage.
Never exceed the GVWR or the Gross
Axle Weight Rating (GAWR) for either
the front or rear axle. The maximum
load which may be carried in the rear
luggage compartment is 66 lbs (30 kg).
Note That the GranTurismo SPORT is
not designed to tow a trailer, and no
such attempt should be made.
WARNING: Do not exceed the GVWR,
or front or rear GAWR. Exceeding
these limits may lead to poor
handling, vehicle instability or tire
damage which could cause a crash in
which you or others could be seriously
injured or killed.