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With
the right amount of air pressure, your tires will
perform better, wear longer and save fuel. The "right
amount" of air pressure for the original equipment
or same size tires is specified by the vehicle manufacturer
and may be different for front and rear tires. Check
with your Toyo distributor or dealer if the replacement
tires on your vehicle are no longer the same size
as the O.E. tires.
Where To Find The Correct O.E. Inflation Pressure
You will find the recommended pressure on a
placard or sticker in the door jamb, glove compartment,
or near the gas cap. If your vehicle does not have
a placard, check the owner's manual or consult the
vehicle manufacturer, tire manufacturer, or your
local tire dealer. The tire placard tells you the
maximum vehicle load, the cold tire pressure, and
the tire size recommended by the vehicle manufacturer.
Using A Tire Pressure Gauge
You can't tell when tires are low or underinflated
just by looking. Always use an accurate tire pressure
gauge to determine your tire pressure.
When To Check Tire Pressure
Check inflation pressure (including the spare)
at least once a month and before every long trip.
Tires must be checked when they are cold (before
they have run a mile). If you must drive over a
mile for air, measure and record the underinflation
amount of each tire. Upon arriving at the service
station, measure each tire's inflation again and
if the pressure has increased, adjust the amount
of additional air pressure needed. For example,
if cold pressure should be 35PSI, cold pressure
was 28PSI, and current pressure is 33PSI, you should
inflate the warm tires to 40PSI and recheck them
again when cold.
How Do Tires Lose Pressure?
Tires lose pressure naturally through the process
of permeation. Changes in outdoor temperature can
affect the rate at which tires lose air. This change
is more pronounced in hot weather. Generally speaking,
a tire will lose one or two pounds of air pressure
per month in cool weather or even more in hot weather.
Remember, underinflation is the leading cause of
tire failure, so check inflation pressure regularly.
Other Tips
Never "bleed" or reduce air pressure when tires
are hot. It is normal for pressures to build up
as a result of driving.
![]() Make
sure all tire valves and extensions are equipped
with valve caps with rubber gaskets to keep out
dirt and moisture. Have a new valve stem assembly
installed whenever a tire is replaced.
![]() Underinflation or overloading creates excessive heat,
and can lead to tire failure, which could result
in vehicle damage and/or serious injury or death.
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