Acura 2007 MDX Owner's Manual page 414

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Tires
Check the pressure in the tires when
they are cold. This means the vehicle
has been parked for at least three
hours, or driven less than 1 mile (1.6
km). Add or release air, if needed, to
match the recommended cold tire
pressure.
If you check the pressure when the
tires are hot [driven for several miles
(kilometers)], you will see readings 4
to 6 psi (30 to 40 kPa, 0.3 to 0.4
kgf/cm ) higher than the cold
reading. This is normal; do not
release air to match the cold
pressure.
410
Tubeless tires have some ability to
self-seal if they are punctured. You
should look closely for punctures if a
tire starts losing pressure.
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.
Recommended Tire Pressures
The following chart shows the
recommended cold tire pressures for
most normal and high-speed driving
conditions.
Tire Size Cold Tire Pressure
for Normal Driving
P255/55R18 104H
Front/Rear:
32 psi (220 kPa ,
2.2 kgf/cm )
The compact spare tire pressure is:
60 psi (420 kPa , 4.2 kgf/cm )
For convenience, the recommended
tire sizes and cold tire pressures are
on a label on the driver's doorjamb.
For additional information about
your tires, see page 448 .