2004 PONTIAC VIBE TIRE SIZE

This is an example of what your vehicle's Tire-Loading
Information/Certi®cation label might look like. It is
located in the glovebox and shows how much weight
your vehicle may properly carry. The label tells you the
proper size, and recommended in¯ation pressures
for the tires on your vehicle. It also gives you important
information about the number of people that can be
in your vehicle and the total weight that you can carry.
This weight is called the Vehicle Capacity Weight,
and includes the weight of all occupants, cargo and all
nonfactory-installed options.
{CAUTION:
Do not load your vehicle any heavier than the
GVWR, or either the maximum front or rear
GAWR. If you do, parts on your vehicle can
break, and it can change the way your vehicle
handles. These could cause you to lose
control and crash. Also, overloading can
shorten the life of your vehicle.
{CAUTION:
Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.
·Put things in the rear area of your vehicle.
Try to spread the weight evenly. If you
have fold-down rear seats, you'll ®nd four
anchors on the back wall of your trunk.
You can use these anchors to tie down
lighter loads. They're not strong enough
for heavy things, however, so put them
as far forward as you can in the trunk or
rear area.
·Never stack heavier things, like suitcases,
inside the vehicle so that some of them
are above the tops of the seats.
·Don't leave an unsecured child restraint in
your vehicle.
·When you carry something inside the
vehicle, secure it whenever you can.
·Don't leave a seat folded down unless
you need to.
4-33

A. Tire Size
B. Department of Transportation (DOT)
C. Tire Identi®cation Number (TIN)
D. Tire Ply Material
E. Uniform Tire Quality Grading (UTQG)
F. Maximum Cold In¯ation Load Limit
Tire Size:The tire size is a combination of letters and
numbers used to de®ne a particular tire's width,
height, aspect ratio, construction type and service
description. See the ªTire Sizeº illustration later in this
section for more detail.
Department of Transportation (DOT):The
Department of Transportation (DOT) code indicates that
the tire is in compliance with the U.S. Department of
Transportation Motor Vehicle Safety Standards.Tire Identi®cation Number (TIN):The letters and
numbers following DOT code are the Tire Identi®cation
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.
Tire Ply Material:The type of cord and number of plies
in the sidewall and under the tread.
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 see
Uniform Tire Quality Grading on page 5-72.
Maximum Cold In¯ation Load Limit:Maximum load
that can be carried and the maximum pressure
needed to support that load. For information on
recommended tire pressure see
In¯ation Ð Tire
Pressure on page 5-67andLoading Your Vehicle on
page 4-32.
5-63

Tire Size
The following illustration shows an example of a typical
passenger car tire size.
A. Passenger (P-Metric) Tire
B. Tire Width
C. Aspect Ratio
D. Belt Rating
E. Rim Diameter
F. Load Range
G. Speed RatingPassenger (P-Metric) Tire:The United States version
of a metric tire sizing system. The letter ªPº 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.
Tire Width:The three-digit number indicates the tire
section width in millimeters from sidewall to sidewall.
Aspect Ratio:A two-digit number that indicates the tire
height-to-width measurements. For example, if the
tire size aspect ratio is ª70,º as shown in item ªCº of the
illustration, it would mean that the tire's sidewall is
70% as high as it is wide.
Belt Rating:A letter code is used to indicate the type
of ply construction in the tire. The letter ªRº means
radial ply construction; the letter ªDº means diagonal or
bias ply construction; and the letter ªBº means
belted-bias ply construction.
Rim Diameter:Diameter of the wheel in inches.
Load Range:The load range represents the load carry
capacity a tire is certi®ed to carry.
Speed Rating:The maximum speed that a tire
is certi®ed to carry a load. Speed ratings range
from ªAº to ªZº.
5-64

Tread Width:The width of the tire's tread.
UTQGS:Uniform Tire Quality Grading Standards, a tire
information system that provides consumers with
ratings for a tire's traction, temperature and treadwear.
Ratings are determined by tire manufacturers using
government testing procedures. The ratings are molded
into the sidewall of the tire. See
Uniform Tire Quality
Grading on page 5-72.
Vehicle Capacity Weight:Is the number of designated
seating positions multiplied by 150 pounds (68 kg)
plus the rated cargo load. See
Loading Your Vehicle
on page 4-32
Vehicle Maximum Load on the Tire:Load on an
individual tire due to curb weight, accessory weight,
occupant weight and cargo weight.
Vehicle Placard:A label permanently attached to a
vehicle showing original equipment tire size and
the recommended cold in¯ation pressure. See
Loading
Your Vehicle on page 4-32.
In¯ation Ð Tire Pressure
The tire and loading information label, shows the correct
in¯ation pressures for your tires when they're cold.
ªColdº means your vehicle has been sitting for at least
three hours or driven no more than 1 mile (1.6 km).
See
Loading Your Vehicle on page 4-32.
Notice:
Don't let anyone tell you that underin¯ation
or overin¯ation is all right. It's not. If your tires
don't have enough air (underin¯ation), you can get
the following:
·Too much ¯exing
·Too much heat
·Tire overloading
·Bad wear
·Bad handling
·Bad fuel economy
If your tires have too much air (overin¯ation), you
can get the following:
·Unusual wear
·Bad handling
·Rough ride
·Needless damage from road hazards
5-67

When It Is Time for New Tires
One way to tell when it's
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
can't be repaired well because of the size or
location of the damage.
5-70

Buying New Tires
To ®nd out what kind and size of tires you need, look
at the tire and loading information label. For more
information about this label and where to ®nd it, see
Loading Your Vehicle on page 4-32.
Make sure the replacements are the same size,
load capacity, speed rating and construction type
(bias, bias-belted or radial) as your original tires.
{CAUTION:
Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes
or types (radial and bias-belted tires), the
vehicle may not handle properly, and you
could have a crash. Using tires of different
sizes may also cause damage to your vehicle.
CAUTION: (Continued)
CAUTION: (Continued)
Be sure to use the same size and type tires on
all wheels. It's all right to drive with your
compact spare temporarily, it was developed
for use on your vehicle. See ªCompact Spare
Tireº in the index.
{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.
5-71

Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can't know how it's been used
or how far it's 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
Notice:Use tire chains only where legal and only
when you must. Use only SAE Class ªSº type chains
that are the proper size for your tires. Install them
on the front tires for front-wheel-drive vehicles.
If your vehicle has all-wheel-drive, install the
tire chains on the front or all four tires but never on
the rear tires only. Tighten them as tightly as
possible with the ends securely fastened. Drive
slowly and follow the chain manufacturer's
instructions. If you can hear the chains contacting
your vehicle, stop and retighten them. If the contact
continues, slow down until it stops. Driving too
fast or spinning the wheels with chains on will
damage your vehicle.
5-75

Compact Spare Tire
Although the compact spare tire was fully in¯ated when
your 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 your vehicle, you
should stop as soon as possible and make sure
your spare tire is correctly in¯ated. The compact spare
is made to perform well at speeds up to 50 mph
(80 km/h) for distances up to 3,000 miles (5 000 km), so
you can ®nish your trip and have your full-size tire
repaired or replaced where you want. Of course, it's best
to replace your spare with a full-size tire as soon as
you can. Your spare will last longer and be in good
shape in case you need it again.
Notice:When the compact spare is installed, don't
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.
Don't use your compact spare on other vehicles.
And don't mix your compact spare tire or wheel with
other wheels or tires. They won't ®t. Keep your spare tire
and its wheel together.
Notice:Tire chains won't ®t your compact spare.
Using them can damage your vehicle and can
damage the chains too. Don't use tire chains on
your compact spare.
5-88