wheel size CHEVROLET ASTRO PASSENGER 1993 1.G Owners Manual

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Storing a jack, a tire, or other equipment in the passenger
b compartment of the vehicle could cause injury. In a sudden stop or
collision, loose equipment could strike someone. Store all these\
in
I the proper place.
Compact Spare Tire
Although the compact spare was fully inflated when your vehicle\
was new, it
can lose air after a time. Check the inflation pressure regula\
rly. It should be
60 psi (420 kPa). The compact spare is made to go up to 3,000 miles
(5000 km), so you can finish 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.
Don’t use your compact spare on some other vehicle.
And don’t mix your compact spare or wheel with other wheels\
or tires. They
won’t fit. Keep your spare and its wheel together.
Tire chains won’t fit your compact spare. Using them will d\
amage your vehicle and destro) “re chc”? too. Don’t use
ti- chair - 3n your compacl
spare.
A
Storing a jack, a tire, or other equipment in the passenger
compartment
of the vehicle could cause injury. In a sudden stop or
collision, loose equipment could strike someone. Store all these\
in
the proper place.
I
5-3 1

Downloaded from www.Manualslib.com manuals search engine 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 an\
d construction
type (bias, bias-belted
or radial) as your original tires.
A
Mixing tires could cause you to lose control while driving. If you mix
tires
of different sizes or types (like radial and bias-belted tires) the
vehicle may not handle properly, and you could have a crash. Be
sure
to use the same size and type tires on all wheels. I
It’s all right to drive with your compact spare, though. It was developed for
limited use on your vehicle.
Uniform Tire Quality 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 (142)
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 charac\
teristics 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.
Temperatur+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 laborat\
ory test wheel. Sustained high temperature can cause the material of the tire
to degenerate
and reduce tire life, and excessive temperature can lead
to sudden tire
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Downloaded from www.Manualslib.com manuals search engine CAUTION
I
Using the wrong replacement wheels, wheel bolts, or wheel nuts \
on
your vehicle can be dangerous. It could affect the braking and\

handling
of your vehicle, make your tires 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.
NOTICE I
The wrong wheel can also cause problems with bearing life, bra\
ke cooling, speedometer/odometer calibration, headlight aim, bumper height, vehiclc
ground clearance, and tire
or tire chain clearance to the body and chassi I
Used Replacement Wheels
Putting a used wheel on your vehicle is dangerous. You can’t know
how it’s been used or how many miles it’s been driven. It could fail
suddenly and cause an accident.
If you have to replace a wheel use
1 a new GM original equipment wheel.
Tire Chains
f your vehicle has PqA
iamage your vehicle
f you have other size tires, use tire chains only when you ... st. se on
SAE Class “S” type chains that are the proper size for your tires. lnst
hem on the rear axle tires and tighten them
as tightly as PO
he ends securely fastened. Drive slowly and follow the chain
nanufacturer’s instructions.
If you can hear the chains contacting your
rehicle, stop and retighten them.
If the contact continues, slow d8
t stops. Driving too fast with chains on will damage your vehicle.
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