CHEVROLET CORVETTE 1993 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
I
= * 280
Two labels on your vehicle show how
much weight
it may properly carry. The
Tire-Loading Information label found
on
the rear edge of the driver's door
tells
you the proper size, speed rating
and recommended inflation pressures
€or the tires
on your vehicle. It also
gives you impartant 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. The other
label is the Certification label,
also on the rear
edge of the driver's
door. It
tells you the gross weight
capacity of
your vehicle, called the
GVWR (Gross Vehicle Weight Rating).
The
GVWR includes the weight of the
vehicle, all occupants, fuel and cargo.
Never exceed the GVWR
for your
vehicle, or the Gross Axle Weight
Rating
(GAWR) for either the front or
rear axle.
And, if you do have a heavy load, you
should spread it out. Don't carry more
than
100 lbs. (45 kg) in the rear area of
your Corvette.
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i

Downloaded from www.Manualslib.com manuals search engine If you put things inside your vehicle-
like: suitcases, iook, packages, or
mything eke-they will go as fast ais
the vehicle goes. Xyou have to stop or
turn quickly, or if there is a crash,
they'll keep, going.
Thingslyuulput inside..your "
..
vehicle can strike. and-injure
people
in a sudden-stop or twn, or
in a crash.
Put things in the rear area of your
vehicle.
Try to spread the weight evenly.
Never stack heavier things, like
suitcases, inside the vehicle
so
that some of them are above the
tops of the seats.
When you carry something inside
the
vehicle, secure it whenever
you can.
Don't leave a seat folded down
unless you need to.
Tires
We don't make tires. your new vehicle
cows with high quality tires made by a
leading tire manufacturer. These tires
are warranted
by the tire manufacturers
and their warranties are delivered with
every new Corvette. If your spare tire is
a different brand than your road tires,
you will have a tire warranty folder from
each of these manufacturers.
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CAUTION
Inflation-Tire Pressure
The Tire-Loading Information label
! which is on the rear edge of the driver’s
door
shows the correct inflation
pressures for your tires, when they’re
cold. “Cold” means your vehicle has
been sitting for at least three hours or
driven no more than a mile.
If you have to check tires when they’re
not cold,
add 4 psi (28 kPa) to the
numbers on the sticker.
. 282

Downloaded from www.Manualslib.com manuals search engine When to Check:
Check your tires once a month or more.
Don’t forget your compact spare tire. It
should be at 60 psi (420 1tPa).
How to Check:
Use the tire pressure gage provided in
your center storage console to check
tire pressure. Simply looking
at the tires
will not tell you the pressure, especially
if you have radial tires-which may look
properly inflated even if they’re
underinflated.
If your tires have valve caps, be sure to
put them back
on. They help prevent
leaks
by keeping out dirt and moisture.
Tire Rotation
The tires on your Corvette are
directional, asymmetrical, and are
different sizes
front tu rear. Due to this,
your tires should not be rotated. Each
tire
and wheel should be used only in
theqosition it
is in.

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When It’s 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%2 inch (1.6 mm) or less of tread
remaining.
You need a new tire if:
* You can see the indicators at three
You can see cord or fabric showing
The tread or sidewall is cracked, cut
places around the tire.
through the
tire’s rubber.
or snagggd 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 he repaired well
because
of the size or location of the
damage.
Buying New Tires
To find out what kind and size of tires
you need, look at the Tire-Loading
Information label. The
tires installed on
your vehicle when it was new had a Tire
Per€omance
Criteria Specification
(TPC Spec) number on each tire’s
sidewall. When
you get new tires, get
ones with that sme TPC Spec number.
That way, your vehicle will continue to
have
tires that are designed to give
proper endurance, handling, speed
rating, traction, ride and other things
during normal service on your vehicle.
If your tires have an all-season tread
design, the TPC Spec number will be
followed by an “MS” (for mud and
snow).
. ... r .: ;.- - .
If yuu ever replace your tires with those
,not having a TPC Spec number, make
SLUT they are the same size, load range,
speed rating and construction
type
(bias, bias-belted or radial) as your
original tires.
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F L
Unijiim Tire Quality
Grading
The following information relates to the
system developed by the United States
National
Highway Tr&c Safety
Administration which grades tires by
treadwear, traction and temperature
performance. (This applies only
to
vehicles sold in the United States.)
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the tire
wh on
a specified government test course.
For example, a tire graded 150 would
wear one
and a half (1%) times as well
on the govement course as a tire
graded
100. Therelative performance of
tires depends upon the actual
conditions
of their use, however, and
may depart significantly from the norm
due to variations in driving habits,
service practices and differences in road
characteristics and climate.

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Service & Appearance Care
Tra~ti~n-A, 6, C
33% traction grades, from highest to
.lowest are:
A, B, and C. They represent
the tire's ability to stop
on wet pavement
as measured under controlled conditions
on specified ,government test surfaces
of
asphalt and concrete. A tire marked C
may have podr.traction p-erformance.
Warning: The traction grade assigned
to.
this tire is based on braking (straight-
ahead) traction
tests and does not
include cornering (turning) traction.
186.
Temperature-A, B, C
The temperature grades are A (the
highest),
B, and'C, representing the
tire's-resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled conditions
on a specified indoor laboratory test
wheel: Sustained high temperature can
cause the inaterid af the tire to
degenwate.-and
reduce tire @e, and
excessive temperature can
lead to.
sudden tire failure. The-grade
C
corresponds to. a level of performance
which
dl passenger car tires must meet
under:the Federal
Motor Vehicle Sa€ety
Standard
NO.. 109. Grades B.and A
represent higher levels of perfomnance on
the laboratory test wheel than the
minimum
required by law.
Warning: The temperatute grade for
this tire 'is established for a tire that is
properly inftated and not overloaded.
Excessive
speed, underinflation, or
excessive loading, iither separately or in
combination, cah cause heat buildup
and possible
tire failure.
Those grades are
molded on the
sidewalls of passenger car tires.
While the tires available
as standard or
optional equipment on General
Motors
vehicles may vary with. respect to these
grades, all such
tires meet Gene$d.
Motors performance
standards and
have
been appToved for use QII General
Motors vehicles. All passenger type
(P
Metric) tifes .must conform to federal
safety requirements in addition to these.
grades.

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Wheel Alignment and
Tire Balance
The wheels on your vehicle were aligned
and balanced carefully at. the
factory
to give you the longest tire life
and best overall performance.
In most cases, you will'not need to ha
your wheels aligned again. However,
if
you notice unusual tire wear or your
vehicle
pulling.one way or the. other, the
alignment may need
to be reset. 'If you
notice your vehicle vibrating when
driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked
or badly ruste-d.
If wheel nuts keep
coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced.
If
the wheel leaks air out, replace it
(except some aluminum wheels, which
can sometimes be repaired). See your
Chevrolet dealer
if any of these
conditions exist.
Your dealer will know
the lund
of wheel you need.
Each new wheel should have the same
load carrying capacity, diameter, width,
offset, and
be mounted the same way as
the one it replaces.
If you need to replace any of your
wheels, wheel bolts,
or wheel nuts,
replace them only with new GM original
equipment parts..This way, you will be
sure
to have the right wheel, wheel
bolts, and wheel
nuts for your Corvette.
A
Using the twmg replaiement. '
wheels, wkl bolts, or.wheel
nuts: on your .vehicle an be
dangerous. It mu14 afi& &e
braking and handling of.your
vehicle, make yourtires lose air and
make you.lose
control. You could
have. a
collision in which you or
others could be injured. Always use
the correct wheel: wheel bolts, and
wheel nuts for replacement.
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287 w Q

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288
Putting a used -wheel O~YQUK
vehicle is dangerom You
can't know how it's been used.;or
how many miles it's heen driven. It
cwld -fail suddenly and cause- an
.accident, If you have to,replace a
wheel, use a new GM original
equipment wheel.
r
fire Chains

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Never use these to clean your vehicle:
:Gasoline
Benzene
Naphtfia-
Carban Tetrachloride Turpentine
Acetone Lacquer Thinner
Paint Thinner Nail Polish Remover
"'They can all be hazardous-some more,than others-and they can all damage
your vehicle, too.