563
Checking and Maintaining Tyres
Checking Tyres
To safely operate your vehicle, your tyres must be of the proper type and size, in
good condition with adequate tread, and properly inflated.
■
Inflation guidelines
Properly inflated tyres provide the best combination of handling, tread life, and comfort.
Refer to the driver’s doorjamb label for the specified pressure.
Underinflated tyres wear unevenly, adversely affect handling and fuel economy, and
are more likely to fail from overheating.
Overinflated tyres make your vehicle ride harshly, are more prone to road hazards,
and wear unevenly.
Every day before you drive, look at each of the tyres. If one looks lower than the
others, check the pressure with a tyre gauge.
At least once a month or before long trips, use a gauge to measure the pressure in
all tyres, including the spare
*
. Even tyres in good condition can lose 10–20 kPa (0.1–
0.2 bar, 1–2 psi) per month.
■
Inspection guidelines
Every time you check inflation, also examine the tyres and valve stems.
Look for:
• Bumps or bulges on the side or in the tread. Replace the tyre if you find any cuts,
splits, or cracks in the side of the tyre. Replace it if you see fabric or cord.
• Remove any foreign objects and inspect for air leaks.
• Uneven tread wear. Have a dealer check the wheel alignment.
• Excessive tread wear.
2 Wear Indicators P. 564
• Cracks or other damage around valve stem.
1Checking Tyres
Measure the air pressure when tyres are cold. This
means the vehicle has been parked for at least three
hours, or driven less than 1.6 km (1 mile). If
necessary, add or release air until the specified
pressure is reached.
If checked when hot, tyre pressure can be as much as
30–40 kPa (0.3–0.4 bar, 4–6 psi) higher than if
checked when cold.
Whenever tyre pressure is adjusted, you must
calibrate the deflation warning system.
2 Deflation Warning System P. 418
Have a dealer check the tyres if you feel a consistent
vibration while driving. New tyres and any that have
been removed and reinstalled should be properly
balanced.
Using tyres that are excessively worn or
improperly inflated can cause a crash in
which you can be seriously hurt or killed.
Follow all instructions in this owner’s
manual regarding tyre inflation and
maintenance.
* Not available on all models
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