Acura 2011 RL Owner's Manual page 488

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
pressures on this page.
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. The tires will be
underinflated.
482
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 charts show the
recommended cold tire pressures for
most normal driving conditions.
Normal Driving
Tire Size/Type Cold Tire Pressure
P245/45R18 96V Front
32 psi (220 kPa , 2.2 kgf/cm )
Rear
30 psi (210 kPa , 2.1 kgf/cm )
60 psi (420 kPa , 4.2 kgf/cm )
Compact Spare
T155/70D17
110M