
Black plate (53,1)Chevrolet Impala Owner Manual - 2011
Vehicle Care 10-53
SeeTire Inspection on page 10‑51
and Tire Rotation on page 10‑51 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.
Vehicle Storage
Tires age when stored normally
mounted on a parked vehicle. Park
a vehicle that will be stored for at
least a month in a cool, dry, clean
area away from direct sunlight to
slow aging. This area should be
free of grease, gasoline, or
other substances that can
deteriorate rubber. Parking for an extended period can
cause flat spots on the tires that
may result in vibrations while
driving. When storing a vehicle for
at least a month, remove the tires or
raise the vehicle to reduce the
weight from the tires.
Buying New Tires
GM has developed and matched
specific tires for your vehicle.
The original equipment tires
installed on your vehicle, when it
was new, were designed to meet
General Motors Tire
Performance Criteria
Specification (TPC Spec)
system rating. If you need
replacement tires, GM strongly
recommends that you get tires
with the same TPC Spec rating.
This way, your vehicle will
continue to have tires that are
designed to give the same
performance and vehicle safety,
during normal use, as the
original tires.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of your
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all‐season tread
design, the TPC Spec number
will be followed by an MS for
mud and snow. See
Tire
Sidewall Labeling on page 10‑39
for additional information.

Black plate (54,1)Chevrolet Impala Owner Manual - 2011
10-54 Vehicle Care
GM recommends replacing tires
in sets of four. This is because
uniform tread depth on all tires
will help keep your 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 your vehicle.
SeeTire Inspection on
page 10‑51 andTire Rotation on
page 10‑51 for information on
proper tire rotation.
{WARNING
Tires could explode during
improper service. You or others
could be injured or killed if you
attempt to mount or dismount a
tire. Only your dealer or an
authorized tire service center
should mount and dismount
the tires.
{WARNING
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 damage to your
vehicle. Be sure to use the
correct size, brand, and type
of tires on all wheels. It is all
right to drive with your
compact spare temporarily, as
it was developed for use on
your vehicle. See Compact
Spare Tire on page 10‑68.{WARNING
If you use bias-ply tires on the
vehicle, the wheel rim flanges
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.
If you must replace your
vehicle's tires with those that do
not have a TPC Spec number,
make sure they are the same
size, load range, speed rating,
and construction type (radial and
bias‐belted tires) as your
vehicle's original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low‐pressure warning if
non‐TPC Spec rated tires are
installed on your vehicle.

Black plate (56,1)Chevrolet Impala Owner Manual - 2011
10-56 Vehicle Care
This applies only to vehicles
sold in the United States. 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 and
additional General Motors Tire
Performance Criteria (TPC)
standards.All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 would wear one and
a half (1½) 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 significantly 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
specified 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.

Black plate (61,1)Chevrolet Impala Owner Manual - 2011
Vehicle Care 10-61
Tire Changing
Removing the Spare Tire and
Tools
The equipment you will need is
located in the trunk.
1. Open the trunk. SeeTrunk on
page 2‑10.
2. Remove the convenience net if the vehicle has one.
3. Remove the spare tire cover.
4. Turn the wing nut counterclockwise and remove it. 5. Remove the compact spare tire.
6. Turn the nut holding the jack
counterclockwise and remove it.
Then remove the jack and
wrench.
The tools you will need to change a
tire include the jack (A), extension
and protection guide (B), and wheel
wrench (C).

Black plate (62,1)Chevrolet Impala Owner Manual - 2011
10-62 Vehicle Care
Removing the Flat Tire and
Installing the Spare Tire
This vehicle may have aluminum
wheels with exposed wheel nuts.
Use the wheel wrench to loosen all
the wheel nuts. Do not remove
them yet.
Or, this vehicle may have steel
wheels with plastic covers.
To remove the plastic covers and
wheel nut caps, loosen the plastic
nut caps with the wheel wrench in a
counterclockwise direction.If needed, finish loosening them
with your fingers. The plastic nut
caps will not come off.
If needed, use the flat end of the
wheel wrench and pry along the
edge of the cover until it comes off.
The edge of the wheel cover could
be sharp, so do not try to remove it
with your bare hands. Do not drop
the cover or lay it face down, as it
could become scratched or
damaged. Store the wheel cover in
the trunk until the flat tire is repaired
or replaced.
Once you have removed the wheel
cover, use the following procedure
to remove the flat tire and install the
spare tire.
1. Do a safety check before
proceeding. See If a Tire Goes
Flat on page 10‑59.
2. Turn the wheel wrench counterclockwise once on each
wheel nut to loosen it. Do not
remove them yet.

Black plate (63,1)Chevrolet Impala Owner Manual - 2011
Vehicle Care 10-63
3. For all wheel types, find thejacking location using the
diagram above and the
corresponding jacking notches
located on the bottom side of the
plastic molding. The notches in
the plastic molding are marked
with a triangle shape to help you
find them.
The front location is about
17.7 cm (7.0 in) from the rear
edge of the front wheel well. The
rear location is about 11.4 cm
(4.5 in) from the front edge of the
rear wheel well. 4. Put the compact spare tire
near you.
{WARNING
Getting under a vehicle when it is
jacked up is dangerous. If the
vehicle slips off the jack you could
be badly injured or killed. Never
get under a vehicle when it is
supported only by a jack.
{WARNING
Raising your vehicle with the jack
improperly positioned can
damage the vehicle and even
make the vehicle fall. To help
avoid personal injury and vehicle
damage, be sure to fit the jack lift
head into the proper location
before raising the vehicle.
{WARNING
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the
appropriate safety equipment and
training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could
be badly injured or killed if the
vehicle slips off the jack. If a jack
is provided with the vehicle, only
use it for changing a flat tire.

Black plate (64,1)Chevrolet Impala Owner Manual - 2011
10-64 Vehicle Care
5. Raise the vehicle by turning thejack handle clockwise. Raise the
vehicle far enough off the
ground to install the compact
spare tire.
6. Remove all wheel nuts and the flat tire.
{WARNING
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle. In
an emergency, use a cloth or a
paper towel to do this; but be sure
to use a scraper or wire brush
later, if needed, to get all the rust
or dirt off. See If a Tire Goes Flat
on page 10‑59.
7. Remove any rust or dirt from the wheel bolts, mounting surfaces,
and spare wheel.
8. Install the compact spare tire.
{WARNING
Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle's wheel
could fall off, causing a crash.

Black plate (66,1)Chevrolet Impala Owner Manual - 2011
10-66 Vehicle Care
Notice:Improperly tightened
wheel nuts can lead to brake
pulsation and rotor damage. To
avoid expensive brake repairs,
evenly tighten the wheel nuts in
the proper sequence and to the
proper torque specification. See
Capacities and Specifications on
page 12‑2 for the wheel nut
torque specification.
11. Tighten the wheel nuts firmly in a crisscross sequence
as shown. Notice:
Wheel covers will not fit
on your vehicle's compact spare.
If you try to put a wheel cover on
the compact spare, the cover or
the spare could be damaged.
Storing a Flat or Spare Tire
and Tools
{WARNING
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.
After the compact spare tire has
been installed on the vehicle, store
the flat tire in the trunk. When storing a full-size tire, use the
extension with the extension
protector, located in the foam
holder, to help avoid wheel surface
damage.
To store a full-size tire:
1. Install the tools in their original
location in the trunk area and
secure.
2. Place the tire valve stem facing down and the protector/guide
placed through a wheel bolt hole
and threaded onto the bolt
screw.
3. Remove the protector and attach the retainer securely
4. Store the cover as far forward as possible.