Tire Inflation Pressure; Effects Of Incorrect Tire Inflation Pressure; Instructions For Checking Tire Inflation Pressure; Check Only When The Tires Are Cold - Toyota YARIS Manual

4-3. Do-it-yourself maintenance

Tire inflation pressure

Make sure to maintain proper tire inflation pressure. Tire inflation
pressure should be checked at least once per month. However, Toy-
ota recommends that tire inflation pressure be checked once every
two weeks. (P. 422)


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 drive train
If a tire needs frequent inflating, have it checked by any authorized Toyota
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 infla-
tion 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.
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