Tire Inflation Pressure - Lexus GS450h Owner's Manual

Tire inflation pressure

Make sure to maintain proper tire inflation pressure. Tire inflation pressure
should be checked at least once per month. However, Lexus recommends
that tire inflation pressure be checked once every two weeks. (P. 555)
Effects of incorrect tire inflation pressure
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Driving with incorrect tire inflation pressure may result in the following:
Reduced fuel economy
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Reduced driving comfort and poor handling
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Reduced tire life due to wear
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Reduced safety
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Damage to the drive train
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If a tire needs frequent inflating, have it checked by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
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 or has not been driven for more than
1.5 km or 1 mile, you will get an accurate cold tire inflation pressure reading.
Always use a tire pressure gauge.
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It is difficult to judge if a tire is properly inflated based only on its appearance.
It is normal for the tire inflation pressure to be higher after driving as heat is generated
●
in the tire. Do not reduce tire inflation pressure after driving.
Passengers and luggage weight should be placed so that the vehicle is balanced.
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WARNING
Proper inflation is critical to save tire performance
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Keep your tires properly inflated.
If the tires are not properly inflated, the following conditions may occur which could
lead to an accident resulting in 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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Air leaking from between tire and wheel
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Wheel deformation and/or tire damage
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Greater possibility of tire damage while driving (due to road hazards, expansion
●
joints, sharp edges in the road, etc.)
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