When It Is Time For New; Tires - GMC Savana 2011 Owner's Manual

10-66 Vehicle Care
The outer tire on a dual wheel setup
generally wears faster than the
inner tire. Your tires will wear more
evenly and last longer if you rotate
the tires periodically. See Tire
Inspection on page 10 64 and Tire
Rotation on page 10 64. Also see
Scheduled Maintenance on
page 11 2.
WARNING
If you operate your vehicle with a
tire that is badly underinflated, the
tire can overheat. An overheated
tire can lose air suddenly or
catch fire. You or others could be
injured. Be sure all tires (including
the spare) are properly inflated.
See Tires on page 10 52 and Tire
Pressure on page 10 58 for more
information on proper tire inflation.

When It Is Time for New

Tires

Various factors, such as
maintenance, temperatures, driving
speeds, vehicle loading, and road
conditions, influence when you need
new tires.
One way to tell when it is time for
new tires is to check the treadwear
indicators, which appear when your
tires have only 1.6 mm (1/16 in) or
less of tread remaining.
I n f o r ma t i o n P r o v i d e d b y :
Some commercial truck tires,
including Goodyear LT225/75R16
G949 RSA and Goodyear LT225/
75R16 G933 RSD, may not have
treadwear indicators. If the tires
do not have treadwear indicators,
replace the tires when the tread
depth is down to 3.2 mm (1/8 in) for
the front tires, or 1.6 mm (1/16 in)
for the rear tires. See Tire
Inspection on page 10 64 and
Tire Rotation on page 10 64 for
additional information.
The rubber in tires ages over time.
This is also true for the spare tire,
if the vehicle has one, even if it is
not being used. Multiple conditions
affect how fast this aging takes
place, including temperatures,
loading conditions, and inflation
pressure maintenance. Tires will
typically need to be replaced due to
wear before they may need to be
replaced due to age. Consult the tire
manufacturer for more information
on when tires should be replaced.