Filter
Top Products
If you overfill the tire, release air
by pushing on the metal stem
in the center of the tire
valve. Recheck the tire pressure
with the tire gage.
Be sure to put the valve caps
back on the valve stems.
They help prevent leaks by
keeping out dirt and moisture.
High-Speed Operation
{ CAUTION
Driving at high speeds,
100 mph (160 km/h) or higher,
puts an additional strain on
tires. Sustained high-speed
driving causes excessive heat
build up and can cause sudden
tire failure. You could have a
crash and you or others could
be killed. Some high-speed
rated tires require inflation
pressure adjustment for high
speed operation. When speed
limits and road conditions are
such that a vehicle can be
driven at high speeds, make
sure the tires are rated for high
speed operation, in excellent
condition, and set to the
correct cold tire inflation
pressure for the vehicle load.
Vehicles with P245/45R18 96V,
245/45R18 96V, or 245/40R19 94W
size tires, require inflation pressure
adjustment when driving the
vehicle at speeds of 100 mph
(160 km/h) or higher. Use the
following chart to determine the cold
tire inflation pressure when
operating the vehicle under
high-speed conditions.
9-48 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual