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T
_
ir_e _s
_
a
_ n_
d
_
w
_
h
_ e_ e_l_
s
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ture.
For example,
the numbers
2209
mean that the tire was
produced
in
the
22th
week
of 2009. The
other numbers
are
marketing codes that may or may not be used by the tire manufac-
turer. This information
is
used to
contact consumers if a tire defect
requires a recall.
Tire ply composition
and materials
used
The
number of plies indicates the number of layers of rubber-coated
fabric in the
tire.
In general,
the
greater
the number
of
plies,
the
more weight a tire can support. Tire manufacturers also must indi-
cate
the
materials
in
the tire, which include steel, nylon,
polyester,
and others
.
Maximum
Load Rating
This number indicates the maximum load in kilograms and pounds
that
can
be
carried
by
the
tire.
Tire quality
grading
for treadwear,
traction,
and
temperature
resistance
Tread
wear, traction and temperature grades=> page 251
.
Maximum
Permissible
Inflation
Pressure
This
number
is
the greatest amount of air pressure that should ever
be
put in
the tire
under normal driving conditions.
Replacing
tires or rims on vehicles
equipped
with
tire
pressure
monitoring
system*
The
wheels on your vehicle are equipped with a sensor which
constantly
monitors
the air pressure
inside
the tire, and then
trans-
mits this information to the tire pressure monitoring system
*.
If you
are going
to
replace the wheel rims
on
your vehicle, make sure the
new rims also have these sensors
.
The sensors must be compatible
with
the tire
pressure
monitoring
system
*
on your vehicle.
If
the sensors are to
be
installed on different rims
,
the
seal, washer
,
and valve cap for each sensor
must
be replaced.
If you
install rims,
which do not
have
the sensors, or
have
sensors
which are not compatible, then the tire pressure monitoring
system* will not work properly.
In
this case, the tire pressure moni-
toring
system
*
would not
be
able
to monitor the
tire pressure or
warn you if it is necessary
.
•
The
battery inside of the tire pressure sensor has a
limited
service
life.
•
Always drive with the valve stem caps securely mounted.
We
recommend using factory installed valve stem caps. Ask your autho-
rized
Audi dealer to replace lost valve stem caps.
The
installation
of
replacement
tires with steel cord body plies
in
the tire sidewall may cause malfunction
of the tire pressure moni-
toring
system*, and is
not recommended
(cord
material information
in molded on the tire sidewall)
.
Always check your tire pressure
monitoring
system
*
indicator after
replacing
one or more
tires
on
your
vehicle.
If
the tire pressure
monitoring
system
*
indicator flashes, or
is
on, your
system
is not
working properly. Your replacement tire might be incompatible with
your tire pressure monitoring
syst
em*
,
or some component
of
the
tire
pressure
monitoring
system*
may be
damaged.
&
WARNING
•
Using incorrect or unmatched tires and/ or wheels or improper
tire and wheel combinations can lead to loss of control, collision
and serious personal injury.
•
Always use tires, rims and wheel bolts that meet the specifica-
tions of original factory-installed tires or other combinations that
have been specifically approved by the vehicle manufacturer
.
•
Tires age even if they are not being used and can fail suddenly,
especially at high speeds. Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
lower speeds.
•
Never mount used tires on your vehicle if you are not sure of
their "previous history." Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehicle control.
.,_
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