Lexus 2013 IS250, Owner'S Manual

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7-3. Do-it-yourself maintenance
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IS250_EE(OM53B11E)

Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:

Reduced fuel efficiency

Reduced driving comfort and tire life

Reduced safety

Damage to the drivetrain
If a tire needs frequent inflating, have it checked by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.

Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:

Check only when the tires are cold.
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.
The appearance of the tire can be misleading. In addition, tire inflation pressure
that is even just a few pounds off can affect ride quality and handling.

Do not reduce tire inflation pressure after driving. It is normal for tire inflation
pressure to be higher after driving.

Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is balanced.
Tire inflation pressure
Make sure to maintain proper tire inflation pressure. Tire inflation pres-
sure should be checked at least once per month. However, Lexus recom-
mends that tire inflation pressure be checked once every two weeks.
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P. 544)