GMC Terrain 2025 - When It Is Time for New Tires

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18552429) - 2025
Vehicle Care 261
Check that all wheel nuts are properly
t
i
ghtened. See “Wheel Nut Torque” under
Capacities and Specifications 3296, and
“Removing the Flat Tire and Installing the
Spare Tire” under Tire Changing 3267.
{ W
arning
R
ust or dirt on awheel, or on the parts
to
which it is fastened, can cause wheel
nuts to become loose over time. The
wheel could come off and cause a crash.
When changing awheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle. In an
emergency, acloth or paper towel can
be used; however, use a scraper or wire
brush later to remove all rust or dirt.
Lightly coat the inner diameter of the
wheel hub opening with wheel bearing
grease after a wheel change or tire rotation
to prevent corrosion or rust buildup.
{ Warning
D
o not apply grease to the wheel
mo
unting surface, wheel conical seats,
or the wheel nuts or bolts. Grease
applied to these areas could cause
awheel to become loose or come off,
resulting in acrash.
When It Is Time for New Tires
Fa
ctors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road
conditions affect the wear rate of the tires.
Treadwear indicators are one way to tell when
it
is time for new tires. Treadwear indicators
appear when the tires have only 1.6 mm
(1/16 in) or less of tread remaining. See Tire
Inspection 3260 and Tire Rotation 3260.
The rubber in tires ages over time. This also
applies to the spare tire, if the vehicle has
one, even if it is never used. Multiple factors
including temperatures, loading conditions,
and inflation pressure maintenance affect
how fast aging takes place. GM recommends
that tires, including the spare if equipped, be
replaced after six years, regardless of tread
wear. To identify the age of atire, use the
tire manufacture date, which is the last four
digits of the DOT Tire Identification Number
(TIN) molded into one side of the tire sidewall.
The last four digits of the TIN indicate the
tire manufactured date. The first two digits
represent the week and the last two digits, the
year. For example, the third week of the year
2020 would have a4-digit DOT date of 0320.
Week 01 is the first full week (Sunday through
Saturday) of each year.