wheel SATURN L-SERIES 2004 Service Manual

Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied 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 signicantly 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 specied 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.
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 specied indoor
laboratory test wheel. Sustained high temperature can
cause the material 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.
Warning: The temperature grade for this tire is
established for a tire that is properly inated and not
overloaded. Excessive speed, underination, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
5-66
ProCarManuals.com

Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are
not needed. However, if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset. If you notice your vehicle
vibrating when driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel bolts keep coming loose, the
wheel and wheel bolts should be replaced. If the wheel
leaks air, replace it (except some aluminum wheels,
which can sometimes be repaired). See your Saturn
Retailer if any of these conditions exist.
Your retailer will know the kind of wheel or wheel bolt
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 your wheels or wheel
bolts, replace them only with new Saturn original
equipment parts. This way, you will be sure to have the
right wheel and wheel bolts for your Saturn.
{CAUTION:
Using the wrong replacement wheels or wheel
bolts 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 and wheel bolts 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.
SeeChanging a Flat Tire on page 5-70for more
information.
5-67
ProCarManuals.com

Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or how far it’s been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new Saturn original
equipment wheel.
Tire Chains
{CAUTION:
Don’t use tire chains. There’s not enough
clearance. Tire chains used on a vehicle
without the proper amount of clearance can
cause damage to the brakes, suspension or
other vehicle parts. The area damaged by the
tire chains could cause you to lose control of
your 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 your
vehicle and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device if it’s contacting your vehicle, and don’t
spin your wheels. If you do nd traction devices
that will t, install them on the front tires.
5-68
ProCarManuals.com

If a Tire Goes Flat
It’s unusual for a tire to “blowout” while you’re driving,
especially if you maintain your tires properly. If air goes
out of a tire, it’s 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 at tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel rmly.
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’d 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 be
very 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.
The jack provided with your vehicle is
designed only for changing a at tire. If it is
used for anything else, you or others could be
badly injured or killed if the vehicle slips off
the jack. Use the jack provided with your
vehicle only for changing a at tire.
If a tire goes at, the next part shows how to use your
jacking equipment to change a at tire safely.
5-69
ProCarManuals.com

Changing a Flat Tire
If a tire goes at, avoid further tire and wheel damage
by driving slowly to a level place. Turn on your
hazard warning ashers.
{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.
CAUTION: (Continued)
CAUTION: (Continued)
To help prevent the vehicle from moving:
1. Set the parking brake rmly.
2. Put the shift lever in PARK (P).
3. Turn off the engine and do not restart
while the vehicle is raised.
4. Do not allow passengers to remain in the
vehicle.
To be even more certain the vehicle won’t
move, you should 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.
5-70
ProCarManuals.com

The following steps will tell you how to use the jack and
change a tire.
Removing the Spare Tire and Tools
(Sedan)
The equipment you’ll need is located in the trunk.
1. Open the jack access door on the left side panel of
the trunk.
2. Remove the nut that holds the jack in place and
remove the jack together with the wheel wrench.
5-71
ProCarManuals.com

3. Lift the trunk liner and place the plastic hook in the
lip of the trunk.
4. Remove the nut that holds down the spare tire.
5. Remove the compact spare tire. SeeCompact
Spare Tire on page 5-81
6. The wheel wrench is held in place by two clips
which are attached to the jack. Remove the
wheel wrench from the jack.
7. Fold out the socket portion of the wrench from the
handle.Removing the Spare Tire and Tools
(Wagon)
The equipment you’ll need is in the cargo area.
5-72
ProCarManuals.com

1. Lift up the spare tire cover by the handle. Fold the
side panels in and then attach the cover to the
liftgate with the hook provided.
2. Remove the nut that holds down the spare tire.
3. Remove the compact spare tire. SeeCompact
Spare Tire on page 5-81
4. Remove the wing-bolt that holds the jack in place
and remove the jack together with the wheel
wrench.5. The wheel wrench is held in place by two clips
which are attached to the jack. Remove the
wheel wrench from the jack.
6. Fold out the socket portion of the wrench from the
handle.
The tools you’ll be using include the jack (A) and wheel
wrench (B).
5-73
ProCarManuals.com

Removing the Wheel
You must take off the wheel cover or hubcap to reach
the wheel bolts.
For steel wheels with full plastic covers and aluminum
wheels with large circular center caps, do the following:
1. Loosen all ve hex-shaped plastic caps by turning
the wrench counterclockwise. Do not try to remove
plastic caps from the cover or center cap.
2. Pull the cover or center cap away from the wheel
and place it in the trunk.
When reinstalling full plastic covers or center caps,
tighten all ve plastic caps hand snug with the aid of the
wheel wrench and tighten them with the wheel wrench
an additional one–quarter of a turn.
Removing the Flat Tire and Installing
the Spare Tire
1. Use the wheel wrench to loosen all the wheel nuts.
Don’t remove them yet.
2. The jack has a bolt head at the end. Attach the
wheel wrench to the jack bolt head and rotate
the wheel wrench clockwise (to the right). That will
raise the lift head a little.
3. Move the jack over to where the at tire is.
5-74
ProCarManuals.com

6. Raise the vehicle by turning the jack handle
clockwise. Raise the vehicle far enough off the
ground so there is enough room for the compact
spare tire to t underneath the wheel well.
7. Remove all of the wheel nuts.
8. Take off the tire and wheel.9. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
{CAUTION:
Rust or dirt on the wheel, or on the parts to
which it is fastened, can make the wheel bolts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
the places where the wheel attaches to the
vehicle. In an emergency, you can use a cloth
or a paper towel to do this; but be sure to use
a scraper or wire brush later, if you need to, to
get all the rust or dirt off.
5-76
ProCarManuals.com