Tyre Pressure For High-Speed Operation - Cadillac 2015 ATS Owner's Manual

10-38 Vehicle Care
example of the Tyre and
Loading Information label, see
Vehicle Load Limits on
page 9-10. How the vehicle is
loaded affects vehicle handling
and ride comfort. Never load the
vehicle with more weight than it
was designed to carry.
When to Check
Check the tyres once a month
or more.
How to Check
Use a good quality pocket-type
gauge to check the tyre
pressure. Proper tyre inflation
cannot be determined by looking
at the tyre. Check the tyre
inflation pressure when the tyres
are cold, meaning the vehicle
has not been driven for at least
three hours or no more than
1.6 km (1 mi).
Remove the valve cap from the
tyre valve stem. Press the tyre
gauge firmly onto the valve to
get the pressure measurement.
If the cold tyre inflation pressure
matches the recommended
pressure on the Tyre and
Loading Information label, no
further adjustment is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the
inflation pressure in high, press
on the metal stem in the centre
of the tyre valve to release air.
Re-check the tyre pressure with
the tyre gauge.
Return the valve caps on the
valve stems to keep out dirt and
moisture and prevent leaks.
Tyre Pressure for
High-Speed Operation
Warning
Driving at high speeds, 160 km/h
(100 mph) or higher, puts an
additional strain on tyres.
Sustained high-speed driving
causes excessive heat build-up
and can cause sudden tyre
failure. You could have a crash
and you or others could be killed.
Some high-speed rated tyres
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 tyres are
rated for high-speed operation, in
excellent condition, and set to the
correct cold tyre inflation pressure
for the vehicle load.