Page 328 of 432

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
index and speed rating of the tire.
The load index represents the
load carry capacity a tire is
certi ed to carry. The speed
rating is the maximum speed a
tire is certi ed to carry a load.
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, 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.
5-42 Service and Appearance Care
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Page 342 of 432

Non-TPC Spec rated tires may
give a low-pressure warning that
is higher or lower than the proper
warning level you would get with
TPC Spec rated tires. SeeTire
Pressure Monitor System on
page 5-46.
Your vehicle’s original equipment
tires are listed on the Tire and
Loading Information Label.
SeeLoading the Vehicle on
page 4-18, for more information
about the Tire and Loading
Information Label and its location
on your vehicle.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, rollover airbags, 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 5-54
andAccessories and Modifications
on page 5-3for additional
information.
5-56 Service and Appearance Care
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Used Replacement Wheels
{CAUTION
Putting a used wheel on your
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 Saturn original
equipment wheel.
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 the vehicle and you or
others may be injured in a crash.
(Continued)
CAUTION (Continued)
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
vehicle’s wheels. If you do nd
traction devices that will t, install
them on the front tires.
5-60 Service and Appearance Care
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Page 422 of 432

B
Battery...............................5-29
Electric Power
Management.................3-15
Run-Down Protection.........3-16
Belt Routing, Engine.............6-15
Bluetooth
®.........................3-103
Brake
Emergencies...................... 4-5
Brake Fluid.........................5-27
Brakes...............................5-27
Antilock............................. 4-4
Parking...........................2-27
System Warning Light.......3-36
Braking................................ 4-3
Braking in Emergencies.......... 4-5
Break-In, New Vehicle..........2-20
Bulb Replacement................5-37
Fog Lamp ........................3-13
Halogen Bulbs..................5-36
Headlamp Aiming..............5-35
Headlamps......................5-35
High Intensity Discharge
(HID) Lighting...............5-36Bulb Replacement (cont.)
License Plate Lamps.........5-37
Taillamps, Turn Signal,
Stoplamps and
Sidemarker Lamps.........5-36
Buying New Tires.................5-54
C
Calibration..........................3-54
California
Perchlorate Materials
Requirements................. 5-4
California Fuel....................... 5-6
California Proposition 65
Warning............................ 5-3
Camera, Rear Vision............2-37
Canadian Owners..................... ii
Capacities and
Speci cations...................5-98
Carbon Monoxide.................2-11
Engine Exhaust................2-30
Liftgate............................2-10
Winter Driving..................4-15
Care of
Safety Belts.....................5-86Cargo
Tie Downs .......................2-53
Cargo Cover........................2-53
Cargo Management System....2-53
CD, MP3 ....................3-92, 3-97
Center Console Storage........2-50
Chains, Tire........................5-60
Charging System Light..........3-35
Check
Engine Lamp...................3-39
Checking Things Under
the Hood .........................5-10
Chemical Paint Spotting........5-90
Child Restraints
Infants and Young
Children.......................1-30
Lower Anchors and
Tethers for Children.......1-37
Older Children..................1-28
Securing a Child Restraint
in a Rear Seat Position....1-43
Securing a Child Restraint
in the Right Front Seat
Position.......................1-45
Systems..........................1-33
Where to Put the
Restraint......................1-35
i-2 INDEX
ProCarManuals.com