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HOOSIER
GT TIRE INFORMATION
PRESSURE RECOMMENDATION
- Flat
Tracks
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HOT
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COLD
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PSI
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BAR
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PSI
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BAR
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30
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2.0
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20
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1.4
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- Banked
Tracks
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HOT
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COLD
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PSI
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BAR
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PSI
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BAR
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32
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2.2
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22
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1.5
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Track pressures will depend of the size of the tire, type
of vehicle, aerodynamics, engine position and the conditions of use. As any of
these increase so must the working pressure.
Initial inflation pressure may vary to obtain these
values. Add 3 psi (0.2 bar) cold pressure when using wet tires.
These are minimum running inflation pressures based on a
2,650 lb. car. Pressure
below the recommended value will cause excessive sidewall deflection, and
compromise the integrity of the tire.
CAMBER
RECOMMENDATION
Temperatures
measured at three different points on the tread are an excellent indicator
deciding the best choice for camber adjustments on the vehicle. The ideal
working temperature range is between 175°
F (80°
C) and 220°
F (104°
C) with an optimum inside to outside spread of 20°
F (0°
C) and with a maximum of 50°
F (10°C).
In a well-balanced chassis the front and rear tire temperatures should be
within 25°
F (15°
C) with the exception of a rear engine Porsche where the rear tires may run 45°
F (25°
C) hotter. If these values are exceeded, we recommend the vehicles geometry
be adjusted. A banked track
significantly increases the stress on the tires inner shoulder. It is
recommended to minimize the temperature spreads by lowered camber settings.
It is recommended that you
“scrub” in your race tires. This procedure involves warming your tires up
over a couple laps, increasing your lap times over the next couple of laps
until you reach your fast time. This should be followed by a cool down lap. The
tires should be removed and allow to cool naturally for 24 hours. This can also
be done during a qualifying session.
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WARNING |
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NOT FOR HIGHWAY USE: All Hoosier
Racing Tires including DOT labeled Hoosier Racing Tires are designed for
racing purposes only on specified racing surfaces and are not to be
operated on public roadways. DOT labeled Hoosier Racing Tires meet
Department Of Transportation requirements for marking and performance
only and are NOT INTENDED FOR HIGHWAY USE. It is unsafe to
operate any Hoosier Racing Tire including DOT tires on public roads. The
prohibited use of Hoosier Racing Tires on public roadways may result in
loss of traction, unexpected loss of vehicle control, or sudden loss of
tire pressure, resulting in a vehicle crash and possible injury or
death. Exception-"PRO
STREET"
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