2010 PONTIAC VIBE wheel

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 (1.5) 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.
Temperature – A, B, C
The temperature grades
are A (the highest), B, and C,
representing the tire’s resistance
to the generation of heat and
its ability to dissipate heat
when tested under controlled
conditions on a specified indoor
laboratory test wheel. Sustained
high temperature can cause thematerial of the tire to degenerate
and reduce tire life, and
excessive temperature can
lead to sudden tire failure.
The grade C corresponds to a
level of performance which all
passenger car tires must meet
under the Federal Motor Vehicle
Safety Standard No. 109.
Grades B and A represent
higher levels of performance
on the laboratory test wheel than
the minimum required by law.
It should be noted that the
temperature grade for this tire
is established for a tire that
is properly inflated and not
overloaded. Excessive speed,
underinflation, or excessive
loading, either separately or in
combination, can cause heat
buildup and possible tire failure.
Vehicle Care 9-59

Wheel Alignment and
Tire Balance
The tires and wheels on the vehicle
were aligned and balanced carefully
at the factory to give the longest tire
life and best overall performance.
Adjustments to wheel alignment and
tire balancing will not be necessary
on a regular basis. However, if there
is unusual tire wear or the vehicle
pulls to one side or the other, the
alignment should be checked. If the
vehicle vibrates when driving on a
smooth road, the tires and wheels
might need to be rebalanced.
See your dealer/retailer for proper
diagnosis.
Wheel Replacement
Replace any wheel that is bent,
cracked or badly rusted or corroded.
If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts
should be replaced. If the wheel
leaks air, replace it (except some
aluminum wheels, which can
sometimes be repaired). See your
dealer/retailer if any of these
conditions exist.
Your dealer/retailer will know the
kind of wheel you need.
Each new wheel should have
the same load-carrying capacity,
diameter, width, offset and be
mounted the same way as the
one it replaces.
If you need to replace any of the
wheels, wheel bolts or wheel nuts,
replace them only with new GM
original equipment parts. This way,
you will be sure to have the right
wheel, wheel bolts and wheel nuts
for the vehicle.{CAUTION
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts on your vehicle can be
dangerous. It could affect the
braking and handling of your
vehicle, make your tires lose
air and make you lose control.
You could have a collision in
which you or others could be
injured. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Notice: The wrong wheel can
also cause problems with bearing
life, brake cooling, speedometer
or odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
See If a Tire Goes Flat on page 9-62
for more information.
9-60 Vehicle Care

Used Replacement Wheels
{CAUTION
Putting a used wheel on the
vehicle is dangerous. You cannot
know how it has been used or how
far it has been driven. It could fail
suddenly and cause a crash. If you
have to replace a wheel, use a
new GM original equipment wheel.
Tire Chains
{CAUTION
If the vehicle has P215/45R18
size tires, do not use tire chains.
There is not enough clearance.
Tire chains used on a vehicle
without the proper amount of
clearance can cause damage to(Continued)
CAUTION (Continued)
the brakes, suspension or other
vehicle parts. The area damaged
by the tire chains could cause you
to lose control of the vehicle and
you or others may be injured in a
crash.
Use another type of traction
device only if its manufacturer
recommends it for use on the
vehicle and tire size combination
and road conditions. Follow that
manufacturer’s instructions.
To help avoid damage to the
vehicle, drive slowly, readjust
or remove the device if it is
contacting the vehicle, and
do not spin the wheels.
If you do find traction devices that
will fit, install them on the front
tires. Notice:
If the vehicle has a tire
size other than P215/45R18 size
tires, use tire chains only where
legal and only when you must.
Use only SAE Class “S” type
chains that are the proper size
for the tires. Install them on the
front tires and tighten them as
tightly as possible with the
ends securely fastened. Drive
slowly and follow the chain
manufacturer’s instructions. If you
can hear the chains contacting the
vehicle, stop and retighten them.
If the contact continues, slow
down until it stops. Driving too
fast or spinning the wheels with
chains on will damage the vehicle.
Vehicle Care 9-61

If a Tire Goes Flat
It is unusual for a tire to blowout
while you are driving, especially if
you maintain your vehicle’s tires
properly. If air goes out of a tire,
it is much more likely to leak out
slowly. But if you should ever have
a blowout, here are a few tips about
what to expect and what to do:
If a front tire fails, the flat tire
creates a drag that pulls the vehicle
toward that side. Take your foot off
the accelerator pedal and grip the
steering wheel firmly. Steer to
maintain lane position, and then
gently brake to a stop well out of
the traffic lane.
A rear blowout, particularly on a
curve, acts much like a skid and
may require the same correction
you would use in a skid. In any rear
blowout remove your foot from the
accelerator pedal. Get the vehicle
under control by steering the way
you want the vehicle to go. It may bevery bumpy and noisy, but you can
still steer. Gently brake to a stop,
well off the road if possible.
{CAUTION
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.
If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place. Turn on the hazard
warning flashers. See Hazard
Warning Flashers on page 5-3 .
{CAUTION
Changing a tire can be dangerous.
The vehicle can slip off the jack
and roll over or fall on you or other
people. You and they could be
badly injured or even killed. Find
a level place to change your tire.
To help prevent the vehicle from
moving:
1. Set the parking brake firmly.
2. Put an automatic transmission shift lever in
P (Park), or shift a manual
transmission to 1 (First) or
R (Reverse).
3. Turn off the engine and do not restart while the vehicle
is raised.
4. Do not allow passengers to remain in the vehicle.
(Continued)
9-62 Vehicle Care

CAUTION (Continued)
To be certain the vehicle will not
move, put blocks at the front and
rear of the tire farthest away from
the one being changed. That
would be the tire on the other
side, at the opposite end of the
vehicle.
When the vehicle has a flat tire (B),
use the following example as a
guide to assist you in the placement
of wheel blocks (A).
A. Wheel Block
B. Flat Tire
The following information explains
how to repair or change a tire.
Tire Changing
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 Wrench To remove the spare tire and tools:
1. Turn the two lock knobs on the
cargo area floor (C) to UNLOCK.
2. Lift up and remove both of the cargo area floors (C).
Vehicle Care 9-63

3. Remove the hook holdingthe 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. 5. Remove the tire/wheel
retainer (D) from the compact
spare tire (A) and remove
the compact spare tire (A).
See Compact Spare Tire on
page 9-68.
6. Place the compact spare tire (A) next to the flat tire.
Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check beforeproceeding. See If a Tire Goes
Flat on page 9-62.
2. If the vehicle has steel wheels with plastic wheel nut caps,
loosen the plastic wheel nut caps.
You may need the wheel wrench
to loosen them. Do not pry off
wheel covers that have plastic
wheel nut caps.
3. Remove the wheel cover and set it off to the side.
4. Attach the jack handle to the jack and turn clockwise to raise the
lift head a little.
9-64 Vehicle Care

5. Loosen all the wheel nuts.Do not remove them yet.
6. Position the jack and raise the jack lift head to fit over the car
flange between the two notches.
{CAUTION
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.
{CAUTION
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. 7. Turn the jack handle clockwise.
Raise the vehicle far enough off
the ground so there is enough
room for the compact spare tire
to fit underneath the wheel well.
Vehicle Care 9-65

8. Remove the wheel nuts and theflat tire.
9. Install the spare tire.
{CAUTION
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 9-62. 10. Remove any rust or dirt from
the wheel bolts, mounting
surfaces and spare wheel.
11. Place the compact spare tire on the wheel-mounting surface.
{CAUTION
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.
9-66 Vehicle Care