2008 PONTIAC SOLSTICE tire size

If your vehicle has Goodyear Eagle F1-GS1
P245/45R18 size tires, they are directional
tires and must roll in a certain direction for
the best overall performance. The direction
is shown by an arrow on the tire sidewall.
Because these tires are directional, they
should be rotated as shown here. These
tires should only be moved from front to
rear and rear to front on the same side of
the vehicle.After the tires have been rotated, adjust the front
and rear ination pressures as shown on the Tire
and Loading Information label. SeeInflation - Tire
Pressure on page 5-58andLoading Your Vehicle
on page 4-24.
Reset the Tire Pressure monitor System. SeeTire
Pressure Monitor Operation on page 5-61.
Make certain that all wheel nuts are properly
tightened. See “Wheel Nut Torque” under
Capacities and Specifications on page 5-101.
{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 a crash. 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 you need to, to get all the rust or
dirt off.Directional Tires
5-66

When It Is Time for New Tires
Various factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road conditions
inuence when you need 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 new tires 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.
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.
5-67

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 5-53
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 5-65for
information on proper tire rotation.{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.
5-68

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.
SeeTire Pressure Monitor System on page 5-59.
Your vehicle’s original equipment tires are listed on
the Tire and Loading Information label. SeeLoading
Your Vehicle on page 4-24, 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,
traction control, and electronic 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 GM specic
wheel and tire systems developed for your
vehicle, and have them properly installed by
a GM certied technician.
SeeBuying New Tires on page 5-68andAccessories
and Modifications on page 5-3for additional information.
5-69

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 GM 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, re-adjust or remove the
device if it is contacting your vehicle, and do
not spin your wheels. If you do nd traction
devices that will t, install them on the
rear tires.
5-74

T
Tachometer....................................................3-22
Taillamps
Turn Signal, and Stoplamps..........................5-48
Theft-Deterrent, Radio.....................................3-68
Theft-Deterrent Systems...................................2-13
Content Theft-Deterrent................................2-13
PASS-Key
®III+...........................................2-15
PASS-Key®III+ Operation.............................2-15
Tilt Wheel........................................................ 3-6
Time, Setting..................................................3-50
Tire
Pressure Light.............................................3-31
Tires.............................................................5-51
Aluminum or Chrome-Plated Wheels,
Cleaning.................................................5-91
Buying New Tires........................................5-68
Chains.......................................................5-74
Cleaning....................................................5-91
Different Size..............................................5-69
If a Tire Goes Flat.......................................5-75
Ination - Tire Pressure................................5-58
Inspection and Rotation................................5-65
Pressure Monitor Operation...........................5-61
Pressure Monitor System..............................5-59
Tire Sealant and Compressor Kit...................5-76
Tire Sidewall Labeling..................................5-53
Tire Terminology and Denitions....................5-55Tires (cont.)
Uniform Tire Quality Grading.........................5-70
Wheel Alignment and Tire Balance.................5-71
Wheel Replacement.....................................5-72
When It Is Time for New Tires......................5-67
Winter Tires................................................5-52
Towing
Recreational Vehicle.....................................4-29
Towing a Trailer..........................................4-29
Your Vehicle...............................................4-29
Traction
Control System (TCS).................................... 4-6
Limited-Slip Rear Axle.................................... 4-9
Traction Control System...................................3-29
Transmission
Fluid, Automatic...........................................5-23
Fluid, Manual..............................................5-23
Transmission Operation, Automatic....................2-22
Transmission Operation, Manual........................
2-24
Trunk.............................................................. 2-9
Trunk Ajar Light..............................................3-36
Turn and Lane-Change Signals.......................... 3-8
Turn Signal/Multifunction Lever........................... 3-7
U
Uniform Tire Quality Grading............................5-70
Using this Manual............................................... iii
11

V
Vehicle
Control........................................................ 4-3
Damage Warnings........................................... iv
Loading......................................................4-24
Parking Your...............................................2-28
Service Soon Light......................................3-36
Symbols......................................................... iv
Vehicle Data Recording and Privacy..................7-17
Vehicle Identication
Number (VIN).............................................5-94
Service Parts Identication Label...................5-94
Vehicle Personalization
DIC ...........................................................3-44
Ventilation Adjustment......................................3-20
Visors...........................................................2-13
W
Warning Lights, Gages and Indicators................3-20
Warnings
DIC Warnings and Messages........................3-40
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. ivWheels
Alignment and Tire Balance..........................5-71
Different Size..............................................5-69
Replacement...............................................5-72
Windows.......................................................2-10
Manual......................................................2-11
Power........................................................2-12
Windshield
Washer......................................................3-10
Washer Fluid..............................................5-36
Wiper Blade Replacement.............................5-50
Wiper Blades, Cleaning................................5-90
Wipers......................................................... 3-9
Winter Driving................................................4-19
Winter Tires...................................................5-52
X
XM Radio Messages.......................................3-67
XM™ Satellite Radio Antenna System................3-70
Y
Your Vehicle and the Environment....................... 6-2
12