Tire Pressure For High-Speed Operation - Cadillac SRX 2010 Owner's Manual

srx.book Page 51 Monday, June 8, 2009 8:28 AM
If you overfill the tire, release air
by pushing on the metal stem in
the center of the tire valve.
Re-check 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.
Tire Pressure for
High-Speed Operation
{
WARNING
Driving at high speeds, 160 km/h
(100 mph) 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.
9-51
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 8-12
and Tire Pressure on page 9-49.
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.