Toyota 2012 Yaris Hatchback, Owner'S Manual, Page: 242 / 365

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4-3. Do-it-yourself maintenance
4
Mainten
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Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least
once a month.
Do not forget to check the spare.
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Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
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Reduced fuel efficiency
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Reduced driving comfort and tire life
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Reduced safety
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Damage to the drive train
If a tire needs frequent inflating, have it checked by your Toyota dealer.
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Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
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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 mile or 1.5 km, 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 infla-
tion pressures 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.