Honda 2006 Civic Hybrid Online Reference Owner's Manual page 210

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Tires
Use a gauge to measure the air
pressure in each tire at least once a
month. Even tires that are in good
condition may lose 1 to 2 psi (10 to
20 kPa, 0.1 to 0.2 kgf/cm ) per
month. Remember to check the
spare tire at the same time.
Check the air pressures when the
tires are cold. This means the
vehicle has been parked for at least 3
hours, or driven less than 1 mile (1.6
km). Add or release air, if needed, to
match the recommended cold tire
pressures.
208
If you check air pressures when the
tires are hot (driven for several
miles), you will see readings 4 to 6
psi (30 to 40 kPa, 0.3 to 0.4 kgf/cm )
higher than the cold readings. This
is normal. Do not let air out to match
the recommended cold air pressure.
The tire will be underinflated.
You should get your own tire
pressure gauge and use it whenever
you check your tire pressures. This
will make it easier for you to tell if a
pressure loss is due to a tire problem
and not due to a variation between
gauges.
While tubeless tires have some
ability to self-seal if they are
punctured, you should look closely
for punctures if a tire starts losing
pressure.
Recommended Tire Pressures
The following chart shows the
recommended cold tire pressures for
most normal driving conditions and
speeds.
Cold Tire Pressure
Tire Size
P195/65R15 89S Front/Rear:
32 psi (220 kPa , 2.2
kgf/cm )
The compact spare tire pressure is:
60 psi (420 kPa , 4.2 kgf/cm )