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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,
always reinstall the valve stem cap. This will pre-
vent moisture and dirt from entering the valve
stem, which could damage the valve stem.
Inflation pressures specified on the placard are al-
ways “cold tire inflation pressure”. Cold tire inflation
pressure is defined as the tire pressure after the
vehicle has not 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 autho-
rized tire dealer or original equipment vehicle dealer
for recommended safe operating speeds, loading
and cold tire inflation pressures.
WARNING!
High speed driving with your vehicle under
maximum load is dangerous. The added strain
on your tires could cause them to fail. You could
have a serious collision. Do not drive a vehicle
loaded to the maximum capacity at continuous
speeds above 75 mph (120 km/h).
Radial Ply Tires
WARNING!
Combining radial ply tires with other types of
tires on your vehicle will cause your vehicle to
handle poorly. The instability could cause a col-
lision. Always use radial ply tires in sets of four.
Never combine them with other t ypes of tires.
Tire Repair
If your tire becomes damaged, it may be repaired if
it meets the following criteria:
• The tire has not been driven on when flat.
• The damage is only on the tread section of your
tire (sidewall damage is not repairable).
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