GM recommends replacing tires
in sets of four. This is because
uniform tread depth on all tires will
help keep the vehicle performing
most like it did when the tires were
new. Replacing less than a full set
of tires can affect the braking and
handling performance of the vehicle.
SeeTire Inspection and Rotation on
page 9-53.
{CAUTION
Mixing tires could cause you to
lose control while driving. If you
mix tires of different sizes,
brands, or types (radial and
bias-belted tires), the vehicle
may not handle properly, and
you could have a crash. Using
tires of different sizes, brands,
or types may also cause
(Continued)
CAUTION (Continued)
damage to the vehicle.
Be sure to use the correct
size, brand, and type of tires
on all wheels. It is all right
to drive with the compact
spare temporarily, as it was
developed for use on the
vehicle. SeeCompact
Spare Tire on page 9-70.
{CAUTION
If you use bias-ply tires on the
vehicle, the wheel rim anges
could develop cracks after
many miles of driving. A tire
and/or wheel could fail
suddenly, causing a crash.
Use only radial-ply tires with
the wheels on the vehicle.
Vehicles that have a tire pressure
monitoring system could give
an inaccurate low-pressure warning
if tires not recommended for the
vehicle are installed. Tires that do
not match the original equipment
tires could give a low-pressure
warning that is higher or lower
than the proper warning level you
would get with original equipment
tires. SeeTire Pressure Monitor
System on page 9-48.
The vehicle’s original equipment
tires are listed on the Tire and
Loading Information Label. See
Loading the Vehicle on page 8-32,
for more information about the
Tire and Loading Information label
and its location on the vehicle.
Vehicle Service and Care 9-55
2009 - Pontiac Vibe Owner Manual
The grades are molded on
the sidewalls of most passenger
car tires. The Uniform Tire
Quality Grading (UTQG)
system does not apply to deep
tread, winter-type snow tires,
space-saver, or temporary use
spare tires, tires with nominal
rim diameters of 10 to 12 inches
(25 to 30 cm), or to some
limited-production tires.
While the tires available on
General Motors passenger
cars and light trucks may vary
with respect to these grades,
they must also conform to
federal safety requirements.Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on
a speci ed government test
course. For example, a tire
graded 150 would wear one and
a half (1
1 2) times as well on the
government course as a tire
graded 100. The relative
performance of tires depends
upon the actual conditions of
their use, however, and may
depart signi cantly from the
norm due to variations in driving
habits, service practices,
and differences in road
characteristics and climate.Traction — AA, A, B, C
The traction grades, from
highest to lowest, are AA, A, B,
and C. Those grades represent
the tire’s ability to stop on wet
pavement as measured under
controlled conditions on speci ed
government test surfaces of
asphalt and concrete. A tire
marked C may have poor
traction performance.
{WARNING
The traction grade assigned
to this tire is based on
straight-ahead braking traction
tests, and does not include
acceleration, cornering,
hydroplaning, or peak traction
characteristics.
Vehicle Service and Care 9-57
2009 - Pontiac Vibe Owner Manual
Removing the Spare Tire
and Tools
A. Compact Spare Tire
B. Jack
C. Cargo Area Floor(s)
D. Tire/Wheel Retainer Nut
E. Jack Handle
F. Wheel WrenchTo remove the spare tire and tools:
1. Turn the two lock knobs on the
cargo area oor (C) to UNLOCK.
2. Lift up and remove the both
of the cargo area oors (C).3. Remove the hook holding the
jack (B) and remove the jack (B).
4. Remove the jack handle (E)
and wheel wrench (F) from
the passenger side of the
cargo area.
Vehicle Service and Care 9-63
2009 - Pontiac Vibe Owner Manual