tire size OLDSMOBILE BRAVADA 1994 Owners Manual

Your Driving and the Road
134
Hitches
It’s important to have the correct hitch
equipment. Crosswinds, large trucks
going by, and rough roads are a few
reasons why you’ll need the right hitch.
Here are some rules to follow:
If you’ll be pulling a trailer that, when
loaded, will weigh more than
2,000
pounds (900 kg), be sure to use a
properly mounted, weight-distributing
hitch and sway control
of the proper
size. This equipment is very important
for proper vehicle loading and good
handling when you’re driving.
Will you have to make any holes in
the body of your vehicle when you
install a trailer hitch? If you do, then
be sure to seal the holes later when
you remove the hitch. If you don’t
seal them, deadly carbon monoxide
(CO) from your exhaust can get into
your vehicle (see
Carbon Monoxide in
the
Index). Dirt and water can, too.
. The bumpers on your vehicle are not
intended for hitches. Do not attach
rental hitches or other bumper-type
hitches to them. Use only a frame-
mounted hitch that does not attach to
the bumper. If
your vehicle has
a deadweight hitch
and a tailgate-mounted spare tire, and
your trailer has a winch or tongue jack,
you could have interference between
them.
Safety Chains
You should always attach chains
between your vehicle and your trailer. Cross the safety chains under the
tongue of the trailer
so that the tongue
will not drop to the road if it becomes
separated from the hitch. Instructions
about safety chains may be provided by
the hitch manufacturer or by the trailer
manufacturer. Follow the
manufacturer’s recommendation for
attaching safety chains. Always leave
just enough slack
so you can turn with
your rig. And, never allow safety chains
to drag on the ground.
Trailer Brakes
If your trailer weighs more than 1,000
pounds (450 kg) loaded, then it needs
its own brakes
- and they must be
adequate. Be sure to read and follow
the instructions for the trailer brakes
so
you’ll be able to install, adjust and
maintain them properly. Don’t
tap into your vehicle’s brake
system
if the trailer’s brake system will
use more than
0.02 cubic inch (0.3 cc)
of fluid from your vehicle’s master
cylinder. If it does, both braking
systems won’t work well. You could
even lose your brakes.
Will the trailer brake parts take 3,000
psi (20 650 kPa) of pressure? If not,
the trailer brake system must not be
used with your vehicle.
If everything checks out this far, then
make the brake fluid tap at the port
on the master cylinder that sends
fluid to the rear brakes. But don’t use
copper tubing for this. If
you do, it
will bend and finally break off. Use
steel brake tubing.
Driving with a Trailer
Towing a trailer requires a certain
amount of experience. Before setting
out for the open road, you’ll want to get
to know your rig. Acquaint yourself
with the feel of handling and braking
with the added weight of the trailer.
And always keep in mind that the
vehicle you are driving is now a good
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MFD BY GENERAL MOTORS COW XXlKx
c- GAWRFRT CAWRRR
THIS VEHICLE CONFORMS TO ALL APPLICABLE US. FEDERAL
OF MANUPACTURE SwOwN ABOVE. MOTOR w1ICLE SAFEl’Y STANDARDS IN EPFECT ON TAE DATE
MODEL:
WAX
RR FRT
SPA LmG
SERIAL
NUMBER M.P.V.
SPEED PAYLOAD
TIRESIZE
RTC RIM PSVWA (COLD)
SEE
OWNER’S MANUAL POR ADDITIONAL INPORMATlON
Loading Your Vehicle
The Certificatioflire label is found on
the rear edge of the driver’s door. The
label shows the size of your original
tires and the inflation pressures needed
to obtain the
gross weight capacity of
your vehicle.
This is called the GVWR
(Gross Vehicle Weight Rating). The
GVWR includes the weight of the
vehicle, all occupants, fuel and cargo.
The Certificationnire label also tells
you the maximum weights for the front
md rear axles, called Gross Axle
Weight Rating (GAWR). To find out the
3ctual loads on your front and rear
des, you need to go to a weigh station
md weigh your vehicle. Your dealer can
help
you with this. Be sure to spread out
your load equally on both sides of
the centerline.
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. Using heavier
suspension components
to get added durability might not
change your weight ratings. Ask your
dealer to help you load your vehicle the
right way. NOTICE:
Your warranty does not cover parts
or components that fail because of
overloading.
If you put things inside your vehicle -
like suitcases, tools, packages, or
anything else
- they will go as fast as
the vehicle goes. If you have to stop or
turn quickly, or
if there is a crash,
they’ll keep going.
183
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Service & Appearance Care
188
The tire has a puncture, cut, or other
damage that can’t be 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 Certificationnire
label.
The tires installed on your vehicle when
it was new had a Tire Performance
Criteria Specification (TPC Spec)
number on each tire’s sidewall. When
you get new tires, get ones with that
same 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 number
will be followed by a
“MS” (for mud
and snow).
If you ever replace your tires with those
not having a TPC Spec number, make
sure they are the same size, load range,
speed rating and construction type
(bias, bias-belted or radial) as your
original tires.
Uniform Tire Qualify Grading
The following information relates to the
system developed by the United States
National Highway Traffic 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
when tested under controlled
conditions on a specified government
test course. For example, a tire graded
150 would wear one and a half (1 1/2)
times as well on the government course as
a tire graded
100. The relative
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.
Traction - A, B, C
The 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 poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight-
ahead) traction tests and does not
include cornering (turning) traction.
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
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