2007 SATURN RELAY wheel size
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Tires............................................................ 462
Tire Sidewall Labeling............................... 463
Tire Terminology and De nitions............... 466
In ation - Tire Pressure............................. 469
High-Speed Operation............................... 471
Tire Inspection and Rotation...................... 472
When It Is Time for New Tires.................. 473
Buying New Tires...................................... 474
Different Size Tires and Wheels................ 476
Uniform Tire Quality Grading..................... 477
Wheel Alignment and Tire Balance............ 478
Wheel Replacement.................................. 478
Tire Chains............................................... 480
Accessory In ator...................................... 480
If a Tire Goes Flat.................................... 483
Changing a Flat Tire................................. 484
Removing the Spare Tire and Tools.......... 485
Removing the Flat Tire and Installing
the Spare Tire....................................... 488
Secondary Latch System........................... 495
Storing a Flat or Spare Tire and Tools...... 497
Compact Spare Tire.................................. 500Appearance Care........................................ 501
Cleaning the Inside of Your Vehicle.......... 501
Fabric/Carpet............................................. 502
Leather...................................................... 503
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 504
Care of Safety Belts.................................. 504
Weatherstrips............................................ 504
Washing Your Vehicle............................... 505
Cleaning Exterior Lamps/Lenses................ 505
Finish Care............................................... 505
Windshield, Backglass, and
Wiper Blades......................................... 506
Aluminum Wheels...................................... 507
Tires......................................................... 507
Sheet Metal Damage................................. 508
Finish Damage.......................................... 508
Underbody Maintenance............................ 508
Chemical Paint Spotting............................ 508
Vehicle Care/Appearance Materials............ 509
Section 5 Service and Appearance Care
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(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 certi ed to carry. The load index
can range from 1 to 279. The speed rating is
the maximum speed a tire is certi ed to carry
a load. Speed ratings range from A to Z.Tire Terminology and De nitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission/
transaxle, power steering, power brakes, power
windows, power seats, and air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
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Page 473 of 570
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
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 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 needed, to get all the
rust or dirt off. SeeChanging a Flat Tire
on page 484.
When It Is Time for New Tires
One way to tell when it
is time for new tires is
to check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining.
You need a new tire if any of the following
statements are true:
You can see the indicators at three or more
places around the tire.
You can see cord or fabric showing through
the tire’s rubber.
The tread or sidewall is cracked, cut, or
snagged deep enough to show cord or fabric.
The tire has a bump, bulge, or split.
The tire has a puncture, cut, or other damage
that cannot be repaired well because of the
size or location of the damage.
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Page 475 of 570
{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 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.
SeeCompact Spare Tire on page 500.
{CAUTION:
If you use bias-ply tires on your 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 your 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.
Your vehicle’s original equipment tires are listed
on the Tire and Loading Information Label.
This label is attached to the vehicle’s center pillar
(B-pillar). SeeLoading Your Vehicle on page 391,
for more information about the Tire and Loading
Information Label and its location on your vehicle.
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Different Size Tires and Wheels
If you add wheels or tires that are a different size
than your original equipment wheels and tires,
this may affect the way your vehicle performs,
including its braking, ride and handling
characteristics, stability, and resistance to rollover.
Additionally, if your vehicle has electronic
systems such as, anti-lock brakes, traction control,
and stability control, the performance of these
systems can be affected.{CAUTION:
If you add different sized wheels, your
vehicle may not provide an acceptable
level of performance and safety if tires
not recommended for those wheels are
selected. You may increase the chance that
you will crash and suffer serious injury.
Only use Saturn speci c wheel and tire
systems developed for your vehicle, and
have them properly installed by a Saturn
certi ed technician.
SeeBuying New Tires on page 474and
Accessories and Modi cations on page 412for
additional information.
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Tire Chains
{CAUTION:
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 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 is contacting your vehicle, and do
not spin your vehicle’s wheels. If you
do nd traction devices that will t,
install them on the front tires.
Accessory In ator
Your vehicle may have an accessory in ator. With
it, you can in ate things like air mattresses and
basketballs, and you can also use it to bring your
tires up to the proper pressure.
The accessory in ator is located in the rear
compartment on the driver’s side. To access the
accessory in ator, do the following:
1. Open the liftgate. SeeLiftgate on page 128
for more information.
2. Lift the lever to move the third row rear
seatback forward. SeeThird Row Seat
on page 27for more information.
3. Remove the cover by pulling the lever up.
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Page 487 of 570
To remove the compact spare tire, do the following:
A. Hoist Shaft
B. Hoist Assembly
C. Retainer
D. Compact Spare TireE. Extension
(Chisel End)
F. Folding Wrench
1. Attach the folding wrench (F) to the
extension (E) and insert the chisel end on
an angle through the hole in the rear bumper
and into the hoist shaft (A).2. Turn the folding wrench counterclockwise to
lower the compact spare tire (D) to the
ground. Continue to turn the wrench so the
compact spare tire can be pulled out from
under the vehicle.
3. Tilt the retainer at the end of the cable to
remove the compact spare tire, so it can
be pulled up through the wheel opening.
The hoist is used to store a full-size or a at
road tire under the vehicle. SeeStoring a
Flat or Spare Tire and Tools on page 497
for more information.
4. Remove the compact spare tire from the cable.
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Page 500 of 570
To replace the cover, line up the tabs on the right
of the cover with the slots in the cover opening.
Push the cover in place and push down the tab
so that it rests in the groove. This secures
the cover in place.
Store the center cap or the plastic bolt-on wheel
covers until a full size tire is put back on the
vehicle. When you replace the compact spare with
a full-size tire, reinstall the bolt-on wheel covers
or the center cap. Hand-tighten them over
the wheel nuts, using the folding wrench.
Compact Spare Tire
Although the compact spare tire was fully in ated
when the vehicle was new, it can lose air after
a time. Check the in ation pressure regularly.
It should be 60 psi (420 kPa).
After installing the compact spare on the vehicle,
stop as soon as possible and make sure the spare
tire is correctly in ated. The compact spare is made
to perform well at speeds up to 65 mph (105 km/h)
for distances up to 3,000 miles (5 000 km), so
you can nish your trip and have the full-size tire
repaired or replaced at your convenience.Of course, it is best to replace the spare with a
full-size tire as soon as possible. The spare tire will
last longer and be in good shape in case it is
needed again.
Notice:When the compact spare is installed,
do not take your vehicle through an automatic
car wash with guide rails. The compact
spare can get caught on the rails. That can
damage the tire and wheel, and maybe
other parts of your vehicle.
Do not use the compact spare on other vehicles.
And do not mix the compact spare tire or
wheel with other wheels or tires. They will not t.
Keep the spare tire and its wheel together.
Notice:Tire chains will not t your compact
spare. Using them can damage your vehicle
and can damage the chains too. Do not use tire
chains on your compact spare.
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