Mitsubishi 2010 RVR Owner's Manual page 529

Vehicle care and maintenance
The recommended inflation pressures under normal driving
conditions should be used for the tires listed below.
Item
Normal tire
Compact spare
wheel
Tire pressures should be checked, and adjusted if necessary, at
least once a month.
Pressures should be checked more often whenever weather
temperatures change severely, because tire pressures change
with outdoor temperatures. The pressures listed are always
"cold inflation pressure".
Cold inflation pressure is measured after the vehicle has been
parked for at least three hours or is driven less than 1 mile (1.6
km) after having been parked for three hours.
Cold inflation pressure must not go above the maximum values
molded into the tire sidewall. After driving several miles, your
tire inflation pressure may increase 2 to 6 psi (14 to 41 kPa)
from the cold inflation pressure. Do not let air out of the tires to
get back to the specified cold pressure, or your tires will be too
low.
7
7-28
Tire size Front
P215/70R16 240 kPa,
P225/55R18 35 psi
T155/90D16 420 kPa, 60 psi
Check your tires each time you refuel. If one tire looks lower
than the others, check the pressure for all of them.
You should also take the following safety precautions:
Keep your tires inflated to the recommended pressures.
Rear
(See the tire and loading information placard attached to
240 kPa,
the driver's door sill.)
35 psi
Stay within the recommended load limits.
Make sure that the weight of any load in your vehicle is
evenly distributed.
Drive at safe speeds.
After filling your tires to the correct pressure, check them
for damage and air leaks. Be sure to reinstall the caps on
the valve stems.