1993 GMC SIERRA tire size

Your Driving and the Road
Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inflated to the limit for cold tires. You’ll find
these numbers on the Certification label at the rear edge of the driver’s door
(or see “Tire Loading” in the Index). Then be sure you don’t go over the
GVW limit for your vehicle.
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 righ\
t hitch.
Here are some rules
to follow:
If your vehicle has a step bumper and you are going to use a ball-type
hitch, remove the pad and cut holes in
it to match the hitch and safety
chain holes in the bumper.
If you’ll be pulling a trailer that, when loaded, will weigh more than 4,000
pounds (1800 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.
Safety Chains
You should always attach chains between your vehicle and your trail\
er. 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 atta\
ching 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~~) of fluid from your vehicles 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 vehi\
cle.
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.
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Problenrs on the Road
Jack Storage
Your jack and wheel ratchet are behind the passenger seat. Turn. th\
e wing
nut counterclockwise and remove the cover
if there is one.
Spare Tire
-
i
K2517
Your spare tire is either underneath the rear of the vehicle, or mounted to the
inside of the bed on the driver’s side.
If you have a chassis cab, refer to the
information from the body supplier/installer.
The spare tire
is a full size tire, like the other tires’ on your vehicle.
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Loading Your Vehicle
The CertificationKire label is found on the rear edge of the driver’s door or in
the incomplete vehicle document in the cab. The label shows th\
e 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
GWVR includes the weight of the vehicle, all occupants, fuel and
cargo.
The CertificationKire label also tells you the maximum weights for the front
and rear axles, called Gross Axle Weight Rating (GAWR). To find out the
actual loads on .your front and rear axles, you need to go to a weigh station
and weigh your vehicle. Your dealer can help you with this. .Be sure to
spread out your load equally on both sides of the centerline+
.. , - :I. -I lrT1 I I -
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.
. -1 r,
In the case of a sudden stop or collision, things carried in the bed of 7
injuring you and others. If you put things in the bed of your truck,
you should make sure they are properly secured.
r! your truck could shift forward and come into the passenger are\
a,
-
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Dual Tire Rotation
K2659
Use one of these patterns if you have the same tire sizes and load ranges
on the front and rear.
K2660
1
Use this pattern if your front and rear tires are different sizes or load ranges.
When you install dual wheels, be sure the vent holes in the wheels are
lined up.
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Service & Appearance Cam
When It’s Time for New Tires
K1656
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
2/32 inch (1.6 mm) or
less of tread remaining.
You need a new tire
if:
You can see the indicators at three 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 repalred well
because of the size or location of the damage.
Dual Tire Operation
If your vehicle has dual rear wheels, the outer tire will usually\
wear faster
than the inner tire. Your tires will wear more evenly and last longer
if you
rotate the tires periodically.
If you’re going to be doing a lot of driving on
high-crown roads, you can reduce tire wear by adding
5 psi (35 kPa) to the
tire pressure in the outer tires. Be sure to return
to the recommended
pressures when no longer driving under those conditions.
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r CAUTION I
If you operate your vehicle with a tire that is badly underinflated, the
tire can overheat. An overheated tire can lose air suddenly or catcl.
fire. You or others could be injured. Be sure all tires (including the
spare,
if any) are properly inflated.
Buying New Tires
To find out what kind and size of tires you need, look at the Certificationflire
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 num\
ber. That
way, your vehicle will continue to have tires that are designed to give proper
endurance, handling, speed rating, traction, ride and other thin\
gs 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.
1 CAUTION
* Mixing tires could cause you to lose control while driving. If you mix
vehicle may not handle properly, and you could have a crash. Be
- ) tires of different sizes or types (radial and bias-belted tires), the
I sure to use the same size and type tires on all wheels. I
Uniform Tire Qua/ity Grading
The following information relates to the system developed by the United
States National Highway Traffic Safety Administration which grade\
s tires by
treadwear, traction and temperature performance. (This applies o\
nly 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 governmen\
t 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 var\
iations in
driving habits, service practices and differences in road characteristics and
climate.
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Service & Appearance Care
Tire Chains
If your vehicle has dual wheels or LT265175R16 size tires, don’t use tire
chains; they can damage your vehicle.
__ you don’t have dual wheels or if you have a tire size other than
LT265/75R16, use tire chains only when you must. Use only
SAE
“S” type chains that are the proper size for your tires. Install \
them on the
tires of the rear axle. 3
Tighten the as tightly as possible with the ends securely fastened. Drive I
slowly and TOIIOW 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 with chains on will ’
nage your vehicle.
1 CAUTION
Appearance Cam
I
Cleaning products can be hazardous. Some are toxic. Others can \
L burst into flame if you strike a match or get them on a hot part of
the vehicle. Some are dangerous
if you breathe their fumes in a
zlosed space. When you use anything in a container to clean your
vehicle, be sure
to follow the instructions. And always open your
doors or windows when you’re cleaning the inside.
I ter use these to clean your vehicle:
Gasoline
Benzene
Naphtha
Carbon Tetrachloride
Acetone
Paint Thinner
Turpentine
Lacquer Thinner
Nail Polish Remover
They can all be hazardous-some more than others-and they can
all damage your vehicle, too.
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Appearance Care Materials
PART
NUMBER SIZE
1050172 16 oz.
(0.473L)
1050173 16
oz.
(0.473L)
1050174
16 oz.
(0.473L)
1050214 32
oz.
I050729 8 oz.
(0.237L)
1051055 16
oz.
(0.473L)
1051398
8 oz.
(0.237L)
1052870 16
oz.
DESCRIPTION
Tire Cleaner Cleans white and black tires White Sidewall chrome and stainless steel and Polish Removes rust and corrosion on Chrome Cleaner
and road oil Oil Remover
Removes old waxes, polishes, tar
Tar and
Road
USAGE
VinyVLeather Spot and stain removal on leather
Cleaner or vinyl
Fabric Cleaner Spot and stain removal
on cloth
Glass Cleaner Glass cleaning and spot cleaning
Multi-Purpose Cleans vinyl and cloth on door trim,
Powder Cleaner seats, and carpet-also tires and mats
Vinyl Top Cleaning
of vinyl tops
Cleaner
Preservatone Vinyl
top dressing
Spot Lifter Spot and stain removal on cloth
Wash-Wax Exterior wash
and fabric
on vinyls
and fabric
Magic Mirror polish
Cleaner-Polish Exterior cleaner and
TO077
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