Oldsmobile 2000 Silhouette - Manual (Page 359)

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When to Check
Check your tires once a month or more.
Don’t forget your compact spare tire. It should be
at 60 psi (420 kPa).
How to Check
Use a good quality pocket - type gage to check tire
pressure. You can’t tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 to 13 000 km). Any time you notice unusual
wear, rotate your tires as soon as possible and check
wheel alignment. Also check for damaged tires or
wheels. See “When It’s Time for New Tires” and
“Wheel Replacement” later in this section for more
information. Make sure the spare tire is stored securely.
Push, pull, and then try to rotate or turn the tire. If it
moves, use the folding wrench to tighten the cable. See
“Storing a Flat or Spare Tire and Tools” in the Index.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first rotation
is the most important. See “Scheduled Maintenance
Services” in the Index for scheduled rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.