Toyota TUNDRA 2009 Manual page 498

Instructions for checking tire inflation pressure
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When checking tire inflation pressure, observe the following:
Check only when the tires are cold.
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If your vehicle has been parked for at least 3 hours and has not been
driven for more than 1 mile or 1.5 km, you will get an accurate cold
tire inflation pressure reading.
Always use a tire pressure gauge.
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The appearance of the tire can be misleading. In addition, tire infla-
tion pressures that are even just a few pounds off can degrade ride
and handling.
Do not bleed or reduce tire inflation pressure after driving. It is normal
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for the tire inflation pressure to be higher after driving.
Never exceed the vehicle capacity weight.
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Passengers and luggage weight should be placed so that the vehicle
is balanced.
CAUTION
Proper inflation is critical to save tire performance
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Keep your tires properly inflated.
Otherwise, the following conditions may occur and result in an accident
causing death or serious injury.
Excessive wear
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Uneven wear
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Poor handling
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Possibility of blowouts resulting from overheated tires
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Poor sealing of the tire bead
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Wheel deformation and/or tire separation
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A greater possibility of tire damage from road hazards
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4-3. Do-it-yourself maintenance
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