Cadillac 2008 CTS Owner's Manual page 424

AKENG40_CTS Page 424 Wednesday, July 23, 2008 11:47 AM
Service and Maintenance
NOTICE
Improper tire pressure
promotes adverse effects in tire
life and vehicle performance.
Excessively low inflation causes
deflection of the tire and tire
overheating which reduces tire
strength and thus may damage
the tires. It also causes tire
overloading, abnormal wear,
poor driveability, and poor fuel
economy.
Excessively high inflation causes
abnormal tire wear and poor
ride which promotes vehicle
damage due to impact from
road bumps.
. . . 424
To check and adjust tire
pressure:
You cannot tell if your tires are
properly inflated simply by looking
at them. Radial tires may look
properly inflated even when they
are underinflated.
For tire pressure inspection, the
use of a quality pocket tire
pressure gage is recommended.
Remove the valve cap from the tire
valve stem.
Press the tire gage firmly onto
the valve to get a pressure
measurement.
If the pressure is low, add air until
you reach the recommended
pressure.
If you overfill the tire, release air by
pushing on the metal stem in the
center of the tire valve.
Recheck the tire pressure.
Be sure to put the valve caps back
on the valve stems. They help
prevent leaks by keeping out dirt
and moisture.