Pontiac Fiero 1988 Service Manual page 204

TIRES AND WHEELS 3E-1
SECTION 3E
11RE8 AMD WHEELS
N O T I C E :
All wheel bolt and nut fasteners are important attaching parts in that they could affect the
performance of vital components and systems, and/or could result in major repair expense. They must be replaced
with one of the same part number or with an equivalent part if replacement becomes necessary. Do not use a
replacement part of lesser quality or substitute design. Torque values must be used as specified during reassembly
to assure proper retention of parts.
CONTENTS
D i a g n o s i s
Section 3
G e n e r a l I n f o r m a t i o n
3E-1
Replacement Tires 3E-1
All Seasons Tires 3E-1
P-Metric Tires 3E-2
Tire Placard 3E-2
Wheels ...................................... 3E-2
M a i n t e n a n c e a n d A d j u s t m e n t s
3E-2
Wheel Repair 3E-2
Metric Wheel Nuts and Studs ...................... 3E-3
Inflation of Tires 3E-3
Tire Rotation 3E-3
Tire Chain Usage .......................................... 3E-3
S e r v i c e O p e r a t i o n s
3E-4
Wheel Removal 3E-4
Tire Mounting and Dismounting ................. 3E-5
Tire Repair
3E-5
GENERAL INFORMATION
The factory installed tires and wheels are
designed to operate satisfactorily with loads up to and
including the full rated load capacity when inflated to
the recommended inflation pressures.
Correct tire pressures, wheel alignment and
driving techniques have an important influence on tire
life. Heavy cornering, excessive rapid acceleration, and
heavy braking will increase tire wear.
REPLACEMENT TIRES
Fig. 1
A Tire Performance Criteria (TPC) specification
number is molded in the sidewall near the tire size of
all original equipment tires. This specification number
assures that the tire meets GM's performance
standards for traction, endurance, dimensions, noise,
handling, rolling resistance, and others. Usually, a
specific TPC number is assigned to each tire size.
When replacing tires, only the size, load range,
and construction as originally on the car are
recommended. This can best be accomplished by
replacing with tires of the same TPC specification
number. Use of any other tire size or construction type
may seriously affect ride, handling,
speedometer/odometer calibration, car ground
clearance and tire clearance to the body and chassis.
This does not apply to the spare furnished with the car.
It is recommended that new tires be installed in
pairs on the same axle. If it is necessary to replace only
Waddle 3E~5
Measuring Wheel Runout 3E-5
Spare Tire ...................................................... 3E-6
Match Mounting 3E-6
Balancing Tire and Wheel
3E-6
General Balance Precautions
3E-7
Off^Car Balancing
3E-7
On-Car Balancing
3E-7
Wheel Weights .............................................. 3E-8
Correcting Non-Uniform Tires 3E-8
Aluminum Wheel Cleaning 3E-8
Aluminum Wheel Hub Cap ......................... 3E-8
Aluminum Wheel Porosity Repair .............. 3E-8
Aluminum Wheel Refinishing
3E-9
Wheel Nut Torque ........................................ 3E-9
Tire Pressure Specifications 3E-10
one tire, it should be paired with the tire having the
most tread, to equalize braking traction.
Although they may appear different in tread
design, tires built by different manufacturers with
identical TPC specification numbers, can be
intermixed on the same car.
ALL SEASONS TIRES
Fig. f
Most GM cars are now equipped with steel belted
All Seasons radial tires as standard equipment. These