wheel BUICK ROADMASTER 1993 Owner's Manual

Compact Spare T,ire
Although the compact spare was fully inflated when
your vehicle -was new, it can lose air after a time. Check
the inflation pressure regularly. It should be
60 psi (420
Pa). The compact spare is made to g6 up to 3,000 miles
(50,OO 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 ti\
re
as soon as you can. Your spare will last longer and be in
good shape in case you need it again.
Your anti-1ock.brake system warning light -may come on
when you are driving with a compact spare. See
“Anti-Lock Brake System Waming Light”
in the Index.
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.
., ,. .. .. , ...
L CAUTIOF
s J a Jal , a we, or orner equlpmenr in rn
passenger compartment of the vehicle could
cause injury. In
a sudden stop or collision,
loose equipment could strike someone. Store al
these
in the proper place
3s

I A CAUTION:
If you let your tires spin at high eed, the I
explode and YOU or others could be injured.
And, the transmission or other parts of the
vehicle can overheat. That could cause an
engine compartment fire other damage.
When
you’re stuck, spin the wheels as little as
possible. Don’t spin the wheels above 35 I h
(55 km/h) as shown on the speedome r. c
239

After the tires have beers rotated, adjust the front and
rea inflation pressure as shown on the Tire-Loading
Information label. Make certain that all wheel nuts ax9
properly tightened. See “Wheel Nut Torque” in the
’ ..
Index.
A CAUTION:
Rust or diir on a wheel, or on the parts to which
it is fastened, can make wheel nuts become
loose after a time. The wheel-could come off
‘and cause an accident. When you change a
wheel, remove any rust or dirt from places
where the wheel attaches to the vehicle.
In an
emergency, you can use a’cloth or a paper towel
to
do this; but be sure to use a scraper or wire
brush later,
if you need to, to get all the rust --
dirt off. (See “Changing a Flat Tire” in the
Index.)
I
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
2/32 inch (1.6 mm) or
less of tread remaining.
I
I
.’
DU 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
The tread or sidewall is cracked, cut -or snagged deep
rubber.
enough to show cord or fabric.
The tire has a bump, bulge or .split.
274

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 Tire-Loading Information 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 nu-mber will be followed. by a “MS”
(for mad 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.
‘t
A CAUTION:
Mixing tires could cause you to lose control
while driving. If you mix tires of different siz
or types (radial and bias-belted tires), the
vehicle may not handle properly, and you
cows
have a crash. Be sure to use the same size and
type tires
on all four wheels.
It’s all right to drive with your compact spare (if
you have one). It
was developed for use on your
I
I
‘ :le.
Uniform Tire Quality 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 govement test course. For
I

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 have 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 .I or badly rusted.
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 Buick dealer
if
any of these conditions exist.
Your dealer will how the kind
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 Buick
model.
/! CA-TION:
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
I !
bolts, and wheel nuts for reelacement. jured. Always use the correct wheel,
whec
I
.. ~ ~
277

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 u
equipment wheel.
Tire Chains
278

Aluminum Wheels
If your Buick has these, don’t use chrome polish on
them.
Use wax after you clean them. Also, don’t use
abrasive cleaners or cleaning brushps on them - you
could damaee the proutive caating.
Your Buick dealer has a
GM White Sidewall Tire
Cleaner. You can use
a stiff brush with it.
Weatherstrips
These are places where glass-or metal meets rubber.
Silicone grease there will make them last longer, seal
better, and not squeak. Apply silicone grease with
a
clean cloth at least every si%. mmtk. .-
Sheet Metal Damage
If your vehicle is damaged and requires sheet metal
repair or replacement, make sure the body repair
shop
applies anti-corrosion material to the parts repaired or
replaced to restore corrosion protection.
Foreign Material
Calcium chloride and other salts, ice melting agents,
road oil and tar, tree sap, bird droppings, chemicals from
industrial chimneys, and other foreign matter can
damage your vehicle’s finish if they remain -on painted
surfaces. Use cleaners that are marked safe for painted
surfaces for these stains..
’
284

Estate Wagon Dimensions
Inches Unless Otherwise Noted
OVERALL:
Length ............................ 2 17.7
Width
............... ............. 79.9
Height
............................ 60.3
Wheelbase
........................ 11 5.9
Front Tread ........................
Rear Tread .........................
INTERIOR FRONT
Leg Room .........................
Head Room .........................
Shoulder Room ......................
HipRoom .........................
'62.1
64.1
42.1
39.6
63.4
56.9
INTERIOR REAR:
Leg Room .........................
Head Room ........................
Shoulder Room .....................
HipRoom .........................
CARGO CAPACITY . CU . Ft .........
PASSENGERS:
38.3
39.4
63-5
57.1
22.0
Front ..............................
Rear ................................ 3
ThirdSeat
.......................... 2
BASE CURB WEIGHT . Lbs ......... 446.8
292
.

Roadmaster Sedan Dimensions
'Inches Unless Otherwise Noted
... . . - ~ _.
OVERALL:
Length ........................... 215.8
Width ............................. 78.1
Height .............. : .............. 55.9
Wheelbase ........................ 11 5.9
Front Tread ........................ 61.7
Rear Trexd ......................... 60.7
INTERIOR FRONT
LegRoom ......................... 42.1
Head Room ........................ 39.2
Shoulder Room ..................... 63.3
Hip Room ......................... 56.9
INTERIOR.REAR:
LegRoom .........................
Head'.Room ........................
Shoulder Room .....................
HipRoom .........................
CARGO CAPACITY - CU. Ft. ........
PASSENGERS:
38.9
38.6
63.3
56.9
20.4
2 Front ..............................
Rear ............................... 3
BASE CURB WEIGHT - Lbs. ........ 4073

TO BE SERVICED
(See Explanation of
Scheduled Maintenance
' Months, Whiche'ver Services Following:
Miles (kilometers) or
WHEN TO PERFORM
I
Schedules I and 11y
Item No.
~ Occurs First
7. Front Wheel bearing
~~
Repack See Explanation of Scheduled
Maintenance Service
,Following Schedules I and I1
9. Spark Plug
Replacement*
Inspection*?
I 11. EGR System Inspection*? I
I 12. Air Cleaner Filter
Replacement*
13. Air Cleaner Inspection*?
14.Fuel Tank, Cap
& Lines
Inspection*?
15. Engine Timing &
Distributor Check*
~~
Every 30 000 mi
(50 000 km)
MILES (000)
- KILOMETERS (000)
75 80
J
The services shown in. this schedule up to 48 000 miles (80 00.0 km) should be performed after
48 000 miles at the same intervals.
* An Emission Control Service.
-f- The U.S. Environmental F'rotection Agency has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of
vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in "Section EMaintenance Record".