tires SATURN ION 2007 Owner's Manual

If You Do Decide to Pull a Trailer
If you do, here are some important points:
There are many different laws, including speed
limit restrictions, having to do with trailering.
Make sure your rig will be legal, not only where
you live but also where you’ll be driving. A
good source for this information can be state
or provincial police.
Consider using a sway control. You can ask a
hitch retailer about sway controls.
Do not tow a trailer at all during the rst
1000 miles (1600 km) your new vehicle
is driven. Your engine, axle or other parts
could be damaged. The repairs would not be
covered by your warranty.
Then, during the rst 500 miles (805 km) that
you tow a trailer, do not drive over 50 mph
(80 km/h) and don’t make starts at full throttle.
This helps your engine and other parts of
your vehicle wear in at the heavier loads.
Obey speed limit restrictions when towing a
trailer. Do not drive faster than the maximum
posted speed for trailers, or no more than
55 mph (90 km/h), to save wear on your
vehicle’s parts.
Do not tow a trailer when the outside
temperature is above 100°F (38°C).
Three important considerations have to do with
weight:
the weight of the trailer,
the weight of the trailer tongue
and the total weight on your vehicle’s tires.
Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than 1,000 lbs (454 kg).
But even that can be too heavy.
It depends on how you plan to use your rig. For
example, speed, altitude, road grades, outside
temperature and how much your vehicle is used to
pull a trailer are all important. It can also depend on
any special equipment that you have on your
vehicle, and the amount of tongue weight the
vehicle can carry. See “Weight of the Trailer
Tongue” later in this section for more information.
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Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inated to the upper
limit for cold tires. You’ll nd these numbers on the
Tire-Loading Information label, SeeLoading Your
Vehicle on page 250. Then be sure you don’t go
over the GVW limit for your vehicle, including the
weight of the trailer tongue.
Hitches
It’s important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough
roads are a few reasons why you’ll need the right
hitch. Here are some rules to follow:
The rear bumper on your vehicle is not
intended for hitches. Do not attach rental
hitches or other bumper-type hitches to it. Use
only a frame-mounted hitch that does not
attach to the bumper.
Will you have to make any holes in the body
of your vehicle when you install a trailer
hitch? If you do, then be sure to seal the holes
later when you remove the hitch. If you do
not seal them, deadly carbon monoxide (CO)
from your exhaust can get into your vehicle.
SeeEngine Exhaust on page 120. Dirt
and water can, too.
Safety Chains
You should always attach chains between your
vehicle and your trailer. Cross the safety
chains under the tongue of the trailer so that the
tongue will not drop to the road if it becomes
separated from the hitch. Instructions about safety
chains may be provided by the hitch manufacturer
or by the trailer manufacturer. Follow the
manufacturer’s recommendation for attaching
safety chains and do not attach them to the
bumper. Always leave just enough slack so you
can turn with your rig. And, never allow safety
chains to drag on the ground.
Trailer Brakes
If your vehicle has anti-lock brakes, do not try to
tap into your vehicle’s hydraulic brake system.
If you do, both brake systems won’t work well, or
at all.
Be sure to read and follow the instructions for the
trailer brakes, so you will be able to install,
adjust and maintain them properly.
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Driving with a Trailer
Towing a trailer requires a certain amount of
experience. Before setting out for the open road,
you’ll want to get to know your rig. Acquaint
yourself with the feel of handling and braking with
the added weight of the trailer. And always
keep in mind that the vehicle you are driving is
now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check the trailer hitch and
platform (and attachments), safety chains,
electrical connector, lamps, tires and mirror
adjustment. If the trailer has electric brakes, start
your vehicle and trailer moving and then apply
the trailer brake controller by hand to be sure the
brakes are working. This lets you check your
electrical connection at the same time.
During your trip, check occasionally to be sure
that the load is secure, and that the lamps and any
trailer brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead
as you would when driving your vehicle without
a trailer. This can help you avoid situations
that require heavy braking and sudden turns.
Passing
You will need more passing distance up ahead
when you’re towing a trailer. And, because you’re
a good deal longer when towing a trailer, you
will need to go much farther beyond the passed
vehicle before you can return to your lane.
Backing Up
Hold the bottom of the steering wheel with one
hand. Then, to move the trailer to the left,
just move that hand to the left. To move the trailer
to the right, move your hand to the right. Always
back up slowly and, if possible, have someone
guide you.
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Windshield Wiper Blade Replacement....... 327
Tires............................................................ 328
Winter Tires (Red Line)............................. 329
Tire Sidewall Labeling............................... 330
Tire Terminology and Denitions............... 334
Ination - Tire Pressure............................. 337
High-Speed Operation............................... 338
Tire Inspection and Rotation...................... 339
When It Is Time for New Tires.................. 341
Buying New Tires...................................... 341
Different Size Tires and Wheels................ 343
Uniform Tire Quality Grading..................... 344
Wheel Alignment and Tire Balance............ 346
Wheel Replacement.................................. 346
Tire Chains............................................... 348
If a Tire Goes Flat.................................... 349
Changing a Flat Tire................................. 350
Removing the Spare Tire and Tools.......... 351
Removing the Flat Tire and Installing
the Spare Tire....................................... 356
Storing a Flat or Spare Tire and Tools...... 362
Compact Spare Tire.................................. 365Appearance Care........................................ 366
Cleaning the Inside of Your Vehicle.......... 366
Fabric/Carpet............................................. 367
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 368
Care of Safety Belts.................................. 369
Weatherstrips............................................ 369
Washing Your Vehicle............................... 369
Cleaning Exterior Lamps/Lenses................ 370
Finish Care............................................... 370
Windshield and Wiper Blades.................... 370
Aluminum Wheels...................................... 371
Tires......................................................... 372
Sheet Metal Damage................................. 372
Finish Damage.......................................... 372
Underbody Maintenance............................ 372
Chemical Paint Spotting............................ 373
Vehicle Care/Appearance Materials............ 373
Vehicle Identication.................................. 374
Vehicle Identication Number (VIN)........... 374
Service Parts Identication Label............... 374
Section 5 Service and Appearance Care
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Brake Wear
Your vehicle has front disc brakes and rear drum
brakes or rear disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the
brake pads are worn and new pads are needed.
The sound may come and go or be heard all
the time your vehicle is moving, except when you
are pushing on the brake pedal rmly.
{CAUTION:
The brake wear warning sound means that
soon the brakes will not work well. That
could lead to an accident. When you hear
the brake wear warning sound, have your
vehicle serviced.
Notice:Continuing to drive with worn-out
brake pads could result in costly brake repair.Some driving conditions or climates may cause a
brake squeal when the brakes are rst applied
or lightly applied. This does not mean something
is wrong with your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated,
inspect brake pads for wear and evenly tighten
wheel nuts in the proper sequence to Saturn
specications.
The rear drum brakes do not have wear indicators,
but if you ever hear a rear brake rubbing noise,
have the rear brake linings inspected immediately.
Also, the rear brake drums should be removed
and inspected each time the tires are removed for
rotation or changing. When you have the front
brake pads replaced, have the rear brakes
inspected, too.
Brake linings should always be replaced as
complete axle sets.
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Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and where
to obtain service, see your Saturn Warranty
booklet for details. For additional information refer
to the tire manufacturer’s booklet included with
your vehicle.
{CAUTION:
Poorly maintained and improperly
used tires are dangerous.
Overloading your tires can cause
overheating as a result of too much
friction. You could have an air-out and
a serious accident. SeeLoading Your
Vehicle on page 250.
CAUTION: (Continued)
CAUTION: (Continued)

Underinated tires pose the same
danger as overloaded tires. The
resulting accident could cause serious
injury. Check all tires frequently to
maintain the recommended pressure.
Tire pressure should be checked when
your tires are cold. SeeInflation - Tire
Pressure on page 337.
Overinated tires are more likely to be
cut, punctured, or broken by a sudden
impact — such as when you hit a
pothole. Keep tires at the
recommended pressure.
Worn, old tires can cause accidents. If
your tread is badly worn, or if your tires
have been damaged, replace them.
SeeHigh-Speed Operation on page 338for
ination pressure adjustment for high
speed driving.
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Low-Prole Performance Tire
(Red Line)
If your vehicle has 215/45ZR17 size tires, they are
classied as low-prole performance tires. These
tires are designed for very responsive driving on
wet or dry pavement. You may also notice more
road noise with low-prole performance tires and
that they tend to wear faster.
Notice:If your vehicle has low-prole tires,
they are more susceptible to damage from road
hazards or curb impact than standard prole
tires. Tire and/or wheel assembly damage
can occur when coming into contact with road
hazards like, potholes, or sharp edged
objects, or when sliding into a curb. Your GM
warranty does not cover this type of damage.
Keep tires set to the correct ination pressure
and, when possible avoid contact with
curbs, potholes, and other road hazards.
Winter Tires (Red Line)
If your vehicle has 215/45ZR17 size tires, they are
classied as low-prole performance tires.
These tires are designed for very responsive
driving on wet or dry pavement. If you expect to
drive on snow or ice covered roads often, you may
want to get winter tires for your vehicle. The
low-prole performance tires may not offer the
traction you would like or the same level of
performance as winter tires on snow or ice
covered roads.
Winter tires, in general, are designed for increased
traction on snow and ice covered roads. With
winter tires, there may be decreased dry
road traction, increased road noise and shorter tire
tread life. After switching to winter tires, be alert
for changes in vehicle handling and braking.
See your retailer for details regarding winter tire
availability and proper tire selection. Also, see
Buying New Tires on page 341.
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If you choose to use winter tires:
Use tires of the same brand and tread type on
all four wheel positions.
Use only radial ply tires of the same size, load
range, and speed rating as your original
equipment tires.
Winter tires with the same speed rating as your
original equipment tires may not be available for H,
V, W and ZR speed rated tires. If you choose
winter tires with a lower speed rating, never
exceed the tire’s maximum speed capability.
Tire Sidewall Labeling
Useful information about a tire is molded into its
sidewall. The examples below show a typical
passenger vehicle tire and a compact spare tire
sidewall.(A) Tire Size:The tire size is a combination of
letters and numbers used to dene a particular
tire’s width, height, aspect ratio, construction type,
and service description. See the “Tire Size”
illustration later in this section for more detail.
Passenger (P-Metric) Tire Example
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(B) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
(C) DOT (Department of Transportation):The
Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.
(D) Tire Identication Number (TIN):The letters
and numbers following DOT (Department of
Transportation) code is the Tire Identication
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire
was manufactured. The TIN is molded onto both
sides of the tire, although only one side may have
the date of manufacture.(E) Tire Ply Material:The type of cord and
number of plies in the sidewall and under the tread.
(F) Uniform Tire Quality Grading (UTQG):Tire
manufacturers are required to grade tires
based on three performance factors: treadwear,
traction, and temperature resistance. For more
information seeUniform Tire Quality Grading on
page 344.
(G) Maximum Cold Ination Load Limit:
Maximum load that can be carried and the
maximum pressure needed to support that load.
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(G) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
Tire Size
The following illustration shows an example of a
typical passenger vehicle tire size.
(A) Passenger (P-Metric) Tire:The United States
version of a metric tire sizing system. The letter P
as the rst character in the tire size means a
passenger vehicle tire engineered to standards set
by the U.S. Tire and Rim Association.
(B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is
60, as shown in item C of the illustration, it would
mean that the tire’s sidewall is 60 percent as
high as it is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction;
the letter D means diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter:Diameter of the wheel in
inches.
(F) Service Description:These characters
represent the load range and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The load index
can range from 1 to 279. The speed rating is
the maximum speed a tire is certied to carry a
load. Speed ratings range from A to Z.
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