Cadillac 2005 XLR - Manual (Page 361)

{ CAUTION:
Run-flat tires are constructed differently than
other tires and could explode during improper
service. You or others could be injured or
killed if you attempt to repair, replace,
dismount, or mount a run-flat tire. Let only an
authorized run-flat service center repair,
replace, dismount and mount run-flat tires.
The valve stems on your run-flat tires have sensors that
are part of the Tire Pressure Monitor System (TPMS).
See Tire Pressure Monitor System on page 6-55. These
sensors contain batteries which are designed to last
for 10 years under normal driving conditions. See your
dealer if you ever need to have a wheel replaced,
or if the sensors ever need replacement.
Notice: Using liquid sealants can damage the tire
valves and tire pressure monitor sensors in your
run-flat tires. This damage would not be covered
by warranty. Don’t use liquid sealants in your
run-flat tires.
Inflation - Tire Pressure
Tires need the correct amount of air pressure to operate
effectively.
Notice: Do not let anyone tell you that
under-inflation or over-inflation is all right. It is not.
If your tires do not have enough air (under-inflation),
you can get the following:
• Too much flexing
• Too much heat
• Tire overloading
• Premature or irregular wear
• Poor handling
• Reduced fuel economy
If your tires have too much air (over-inflation), you
can get the following:
• Unusual wear
• Poor handling
• Rough ride
• Needless damage from road hazards
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