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Vehicle Care 9-61
Vehicles with P235/65R18, P235/
55R20, or 235/55R20 size tires
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 44 psi
(300 kPa), whichever is lower. 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
Vehicle Load Limits
on page 8‑11
and Tire Pressure on page 9‑59.
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) 300kPa (44 psi)
Max. Press.
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.