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If your vehicle has P235/55R18 size
tires, they will require inflation
pressure adjustment when driving
your vehicle at speeds of 100 mph
(160 km/h) or higher. Set the cold
inflation pressure to the maximum
inflation pressure shown on the
tire sidewall, or 38 psi (262 kPa),
whichever is lower. See the example
following. When you end this
high-speed driving, return the tires to
the cold tire inflation pressure shown
on the Tire and Loading Information
label. See Loading the Vehicle on
page 4-28 and Inflation - Tire
Pressure on page 5-49.
Example:
You will find the maximum load
and inflation pressure molded on
the tire’s sidewall, in small letters,
near the rim flange. It will read
something like this: Maximum load
690 kg (1521 lbs) 300 kPa (44 psi)
Max. Press.
For this example, you would set the
inflation pressure for high-speed
driving at 38 psi (262 kPa).
Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
the air pressure in your vehicle’s tires
and transmit tire pressure readings to
a receiver located in the vehicle.
Each tire, including the spare
(if provided), should be checked
monthly when cold and inflated to the
inflation pressure recommended by
the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label. (If your vehicle has
tires of a different size than the size
indicated on the vehicle placard or
tire inflation pressure label, you
should determine the proper tire
inflation pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with
a tire pressure monitoring system
(TPMS) that illuminates a low
tire pressure telltale when one or
more of your tires is significantly
under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them
to the proper pressure. Driving on
a significantly under-inflated tire
causes the tire to overheat and can
lead to tire failure. Under-inflation
also reduces fuel efficiency and tire
tread life, and may affect the
vehicle’s handling and stopping
ability.
Please note that the TPMS is
not a substitute for proper tire
maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure, even if under-inflation
has not reached the level to trigger
illumination of the TPMS low tire
pressure telltale.
Service and Appearance Care 5-51