Acura MDX 2009 Manual page 420

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Tires
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.
If you check air pressures 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 2 ) 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.
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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.
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.
2009 MDX
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 454.
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