2008 SATURN AURA HYBRID tire size

The rubber in tires degrades over time, even if they are
not being used. This is also true for the spare tire, if
your vehicle has one. Multiple conditions affect how fast
this aging takes place, including temperatures, loading
conditions, and ination pressure maintenance. With
proper care and maintenance tires will typically wear out
before they degrade due to age. If you are unsure
about the need to replace your tires as they get older,
consult the tire manufacturer for more information.
Buying New Tires
GM has developed and matched specic tires for your
vehicle. The original equipment tires installed on
your vehicle, when it was new, were designed to meet
General Motors Tire Performance Criteria Specication
(TPC spec) system rating. If you need replacement
tires, GM strongly recommends that you get tires with
the same TPC Spec rating. This way, your vehicle
will continue to have tires that are designed to give the
same performance and vehicle safety, during normal
use, as the original tires.GM’s exclusive TPC Spec system considers over a
dozen critical specications that impact the overall
performance of your vehicle, including brake system
performance, ride and handling, traction control, and
tire pressure monitoring performance. GM’s TPC Spec
number is molded onto the tire’s sidewall near the
tire size. If the tires have an all-season tread design,
the TPC spec number will be followed by a MS, for
mud and snow. SeeTire Sidewall Labeling on page 5-47
for additional information.
GM recommends replacing tires in sets of four. This
is because uniform tread depth on all tires will help
keep your vehicle performing most like it did when the
tires were new. Replacing less than a full set of tires can
affect the braking and handling performance of your
vehicle. SeeTire Inspection and Rotation on page 5-58
for information on proper tire rotation.
5-60

{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 your
vehicle’s wheels.
{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.
Vehicles that have a tire pressure monitoring system
could give an inaccurate low-pressure warning if
non-TPC Spec rated tires are installed on your vehicle.
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. See
Tire Pressure Monitor System on page 5-53.
Your vehicle’s original equipment tires are listed on
the Tire and Loading Information label. SeeLoading
Your Vehicle on page 4-22, for more information about
the Tire and Loading Information label and its location
on your vehicle.
5-61

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
specic wheel and tire systems developed
for your vehicle, and have them properly
installed by a Saturn certied technician.
SeeBuying New Tires on page 5-60andAccessories
and Modifications on page 5-3for additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
5-62

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 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.
5-66

T
Tachometer....................................................3-27
Taillamps
Turn Signal, Sidemarker, Stoplamps,
and Back-Up Lamps.................................5-42
Telescopic Wheel.............................................. 3-6
Theft-Deterrent, Radio.....................................3-72
Theft-Deterrent Systems...................................2-15
Content Theft-Deterrent................................2-15
PASS-Key
®III+...........................................2-17
PASS-Key®III+ Operation.............................2-18
Tilt Wheel........................................................ 3-6
Time, Setting..................................................3-57
Tire
Pressure Light.............................................3-35
Tires.............................................................5-46
Aluminum Wheels, Cleaning..........................5-82
Buying New Tires........................................5-60
Chains.......................................................5-66
Cleaning....................................................5-83
Different Size..............................................5-62
If a Tire Goes Flat.......................................5-67
Ination - Tire Pressure................................5-52
Inspection and Rotation................................5-58
Pressure Monitor Operation...........................5-55
Pressure Monitor System..............................5-53
Tire Sealant and Compressor Kit...................5-68Tires (cont.)
Tire Sidewall Labeling..................................5-47
Tire Terminology and Denitions....................5-49
Uniform Tire Quality Grading.........................5-62
Wheel Alignment and Tire Balance.................5-64
Wheel Replacement.....................................5-64
When It Is Time for New Tires......................5-59
Towing
Recreational Vehicle.....................................4-27
Towing a Trailer..........................................4-29
Your Vehicle...............................................4-27
Traction
Control System (TCS).................................... 4-6
Traction Control System...................................3-34
Transmission
Fluid, Automatic...........................................5-22
Transmission Operation, Automatic....................2-26
Trip Odometer................................................3-27
Trunk............................................................2-10
Trunk Lamps..................................................3-17
Turn and Lane-Change Signals.......................... 3-7
Turn Signal/Multifunction Lever........................... 3-7
U
Uniform Tire Quality Grading............................5-62
Using this Manual............................................... iii
11

V
Vehicle
Control........................................................ 4-3
Damage Warnings........................................... iv
Loading......................................................4-22
Symbols......................................................... iv
Vehicle Data Recording and Privacy..................7-16
Vehicle Identication
Number (VIN).............................................5-85
Service Parts Identication Label...................5-85
Vehicle Personalization
DIC ...........................................................3-51
Ventilation Adjustment......................................3-24
Visors...........................................................2-15
W
Warning Lights, Gages and Indicators................3-25
Warnings
DIC Warnings and Messages........................3-46
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. ivWheels
Alignment and Tire Balance..........................5-64
Different Size..............................................5-62
Replacement...............................................5-64
Where to Put the Restraint...............................1-38
Windows.......................................................2-12
Power........................................................2-13
Windshield
Washer........................................................ 3-9
Washer Fluid..............................................5-32
Wiper Blade Replacement.............................5-45
Wiper Blades, Cleaning................................5-81
Wiper Fuses...............................................5-86
Wipers......................................................... 3-8
Winter Driving................................................4-17
X
XM Radio Messages.......................................3-71
XM™ Satellite Radio Antenna System................3-74
Y
Your Vehicle and the Environment....................... 6-2
12