Tyre Pressure For High-Speed; Operation; System - Cadillac CT6 2017 Owner's Manual

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
is high, press on the metal stem in
the centre of the tyre valve to
release air.
Recheck the tyre pressure with the
tyre gauge.
Put the valve caps back on the
valve stems to keep out dirt and
moisture and prevent leaks. Use
only valve caps designed for the
vehicle by GM. TPMS sensors
could be damaged and would not
be covered by the vehicle
warranty.
Tyre Pressure for
High-Speed Operation
Warning
Driving at high speeds, 160 km/h
(100 mph) or higher, puts
additional strain on tyres. Sustained
high-speed driving causes excessive
heat build-up and can cause sudden
tyre failure. This could cause 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 allow the vehicle to
be driven at high speeds, make sure
the tyres are rated for high-speed
operation, are in excellent
condition, and are set to the correct
cold tyre inflation pressure for the
vehicle load.
Vehicles with 245/40ZR20XL (99Y) or
245/40ZR20 95Y size tires require
inflation pressure adjustment when
driving the vehicle at speeds of
VEHICLE CARE
160 km/h (100 mph) or higher. Set the
cold inflation pressure for the front
tyres to 240 kPa (35 psi) and the rear
tyres to 260 kPa (38 psi).
Return the tyres to the recommended
cold tyre inflation pressure when
high-speed driving has ended. See
Vehicle Load Limits 0 191 and Tyre
Pressure 0 276.
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.
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