Summer Tires; Tire Pressure - GMC Terrain 2020 Owner's Manual

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
13556232) - 2020 - CRC - 5/13/19
252 Vehicle Care

Summer Tires

This vehicle may come with high
performance summer tires. These
tires have a special tread and
compound that are optimized for
maximum dry and wet road
performance. This special tread and
compound will have decreased
performance in cold climates, and
on ice and snow. It is recommended
that winter tires be installed on the
vehicle if frequent driving at
temperatures below approximately
5 °C (40 °F) or on ice or snow
covered roads is expected. See
Winter Tires 0 251.
Caution
High performance summer tires
have rubber compounds that lose
flexibility and may develop
surface cracks in the tread area
at temperatures below 7 °C (20 °
F). Always store high
performance summer tires
indoors and at temperatures
(Continued)
Caution (Continued)
above 7 °C (20 °F) when not in
use. If the tires have been
subjected to 7 °C (20 °F) or less,
let them warm up in a heated
space to at least 5 °C (40 °F) for
24 hours or more before being
installed or driving a vehicle on
which they are installed. Do not
apply heat or blow heated air
directly on the tires. Always
inspect tires before use. See Tire
Inspection 0 258.

Tire Pressure

Tires need the correct amount of
air pressure to operate
effectively.
Warning
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:
Tire overloading and
overheating which could
lead to a blowout.
Premature or
irregular wear.
Poor handling.
Reduced fuel economy.
Overinflated tires, or tires that
have too much air, can
result in:
Unusual wear.
Poor handling.
Rough ride.
Needless damage from
road hazards.