When To Check; How To Check - Cadillac 2005 XLR Owner's Manual

A Tire and Loading Information label is attached to the
center pillar, below the driver's door latch. This label
shows your vehicle's original equipment tires and
the correct inflation pressures for your tires when they
are cold. The recommended cold tire inflation pressure,
shown on the label, is the minimum amount of air
pressure needed to support your vehicle's maximum
load carrying capacity.
For additional information regarding how much weight
your vehicle can carry, and an example of the tire
and loading information label, see Loading Your Vehicle
on page 5-30. How you load your vehicle affects
vehicle handling and ride comfort, never load your
vehicle with more weight than it was designed to carry.

When to Check

Check your tires once a month or more.

How to Check

Use a good quality pocket-type gage to check 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. Check the
tire's inflation pressure when the tires are cold. Cold
means your vehicle has been sitting for at least three
hours or driven no more than 1 mile (1.6 km).
6-54
Remove the valve cap from the tire valve stem. Press
the tire gage firmly onto the valve to get a pressure
measurement. If the cold tire inflation pressure matches
the recommended pressure on the Tire and Loading
Information label, no further adjustment is necessary. If
the inflation pressure is low, add air until you reach
the recommended amount.
If you overfill the tire, release air by pushing on the
metal stem in the center of the tire valve. Recheck the
tire pressure with the tire gage.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
Tire Pressure Monitor (TPM)
Your vehicle has a Tire Pressure Monitor (TPM) that
sends tire pressure information to the Driver Information
Center (DIC). Using the DIC control buttons, the
driver is able to check tire pressure levels in all four
road tires. See Tire Pressure Monitor System on
page 6-55 and DIC Controls and Displays on page 3-61
for additional information.