Tyre Pressure For High-Speed Operation; System - Cadillac CTS Owner's Manual

10-38 Vehicle Care
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.
Vehicles with P245/45R17 95V,
P245/40R18 93V, or 255/
35R19 96V size tyres require
inflation pressure adjustment when
driving the vehicle at speeds of
160 km/h (100 mph) or higher. Set
the cold inflation pressure to
280 kPa (41 psi).
Vehicles with 245/40R18 93Y and
275/35R18 95Y size tyres require
inflation pressure adjustment when
driving the vehicle at speeds of
160 km/h (100 mph) or higher. Set
the cold inflation pressure to
300 kPa (44 psi).
Return the tyres to the
recommended cold tyre inflation
pressure when high-speed driving
has ended. See Vehicle Load Limits
on page 9-9 and Tyre Pressure on
page 10-36.
Tyre Pressure Monitor

System

Caution
Modifications made to the Tyre
Pressure Monitor System (TPMS)
by anyone other than an
authorised service facility may
void authorisation to use the
system.
The Tyre Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tyre pressure
levels. The TPMS sensors monitor
the air pressure in your vehicle's
tyres and transmit tyre pressure
readings to a receiver located in the
vehicle.
Each tyre, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tyre inflation
pressure label. (If your vehicle has