WARNING!
● U
nderinflation increases tire flexing and can result
in overheating and tire failure.
● Overinflation reduces a tire's ability t
o cushion
shock. Objects on the road and chuckholes can
cause damage that result in tire failure.
● Overinflated or underinflated tires can affect
vehicle handling and can fail suddenly, resulting
in loss of vehicle control.
● Unequal tire pressures can cause steering
problems. You could lose control of your vehicle.
● Unequal tire pressures from one side of the
vehicle to the other can cause the vehicle to drift
to the right or left.
● Always drive with each tire inflated to the
recommended cold tire inflation pressure.
Both under-inflation and over-inflation affect the
stability of the vehicle and can produce a feeling
of sluggish response or over responsiveness in the
steering.
NOTE:
● Unequal tire pressures from side to side may cause
erratic and unpredictable steering response.
● Unequal tire pressure from side to side may cause
the vehicle to drift left or right.
Battery Economy
Underinflated tires will increase tire rolling resistance
resulting in higher battery charge consumption.
Improper cold tire inflation pressures can cause
abnormal w
ear patterns and reduced tread life,
resulting in the need for earlier tire replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfortable ride.
Over-inflation produces a jarring and uncomfortable
ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed on the
driver's side B-Pillar or rear edge of the driver's side
door.
At least once a month:
● Check and adjust tire pressure with a good quality
pocket-type pressure gauge. Do not make a visual
judgement when determining proper inflation. Tires
may look properly inflated even when they are under-
inflated.
● Inspect tires for signs of tire wear or visible damage.
CAUTION!
After inspecting or adjusting the tire pressure,
alw
ays reinstall the valve stem cap. This will prevent
moisture and dirt from entering the valve stem, which
could damage the valve stem.
Inflation pressures specified on the placard are always
“cold tire inflation pressure”. Cold tire inflation pressure
is defined as the tire pressure after the vehicle has not
SERVICING AND MAINTENANCE 197
been driven for at least three hours, or driven less than
1 mile (1.6 km) after sitting for a minimum of three
hours. The cold tire inflation pressure must not exceed
the maximum inflation pressure molded into the tire
sidewall.
Check tire pressures more often if subject to a wide
range of outdoor temperatures, as tire pressures vary
with temperature changes.
Tire pressures change by approximately 1 psi (7 kPa)
per 12°F (7°C) of air temperature change. Keep this in
mind when checking tire pressure inside a garage,
especially in the Winter.
Example: If garage temperature = 68°F (20°C) and the
outside temperature = 32°F (0°C) then the cold tire
inflation pressure should be increased by 3 psi (21
kPa), which equals 1 psi (7 kPa) for every 12°F (7°C)
for this outside temperature condition.
Tire pressure may increase from 2 to 6 psi (13 to
40 kPa) during operation. DO NOT reduce this normal
pressure build up or your tire pressure will be too low.
Tire Pressures For High Speed Operation
The manufacturer advocates driving at safe speeds and
within posted speed limits. Where speed limits
or conditions are such that the vehicle can be driven at
high speeds, maintaining correct tire inflation pressure
is very important. Increased tire pressure and reduced
vehicle loading may be required for high-speed vehicle
operation. Refer to an authorized tire dealer or original
equipment vehicle dealer for recommended safe
operating speeds, loading and cold tire inflation
pressures.
8
Tread Wear
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