Content .. 118 119 120 121 ..

Daewoo Matiz (2003 year). Manual - part 120

TIRES AND WHEELS 2E – 5

DIAGNOSTIC INFORMATION AND PROCEDURES

TIRE WEAR

1. Measure the depth of the tire tread.

2. If the depth of the tread is below the specified value,

replace the tire.

D106A302

ÁÁÁÁÁÁÁÁÁÁÁ

Limit of The Tread Wear

ÁÁÁÁÁÁÁ

1.6mm (0.06 in.)

3. Indicators appear when the tire tread depth becomes

shallow (less than 1.6mm (0.06 in.)).

2E – 6 TIRES AND WHEELS

IRREGULAR OR EXCESSIVE TIRES WEAR

Condition

Probable Cause

Correction

D16A305A

Low tire inflation pressures.

Improper the tire rotation.

Adjust tire inflation pressures.

Rotate the tires.

D16A305B

Excessive tire inflation pressures.

Improper the tire rotation.

Adjust tire inflation pressures.

Rotate the tires.

D16A305C

Poor toe–in.

Adjust the toe–in.

D16A305D

toe–out.

Adjust the toe–in.

D16A305E

Poor camber or caster.

Faulty suspensions.

Poor wheel balancing.

Improper the tire rotation.

Check the steering knuckle, control
arm, drive axle, and suspensions.
Repair or replace them, as needed.

Adjust the wheel balancing.

Rotate the tires.

TIRES AND WHEELS 2E – 7

REPAIR INSTRUCTIONS

ON-VEHICLE SERVICE

D106A501

D106A502

WHEEL

Removal Procedure

1. Remove the wheel cover on the vehicle equipped

with steel wheel.

2. Loosen the wheel nuts.

3. Raise and suitably support the vehicle.

4. Remove the wheel nuts.

Notice: Never use heat to loosen a tight wheel. It can
shorten the life of the wheel, the wheel nuts and the
wheel bearings. Excessive force, such as hammering
the wheel or tire, can also cause damage and is not rec-
ommended. Slight tapping of the wheel sidewall with
one’s hand or with a rubber mallet is acceptable.

5. Remove the wheel.

Difficulty in removing the wheels from the vehicle can be
due to foreign material or to a tight fit between the wheel
centerhole and the hub or the rotor. These wheels can
be removed by

1. Retightening the wheel nuts on the affected wheel

and then loosening the wheel nuts by two turns.

2. Lowering the vehicle and rocking it from side to side

as hard as possible, using one or more person’s body
weight to loosen the wheel.

3. Raising the vehicle and removing the wheel.

Caution: Do not allow the penetrating oil to get on
the vertical surfaces between the wheel and the
drum (or rotor) because penetrating oil in this area
could cause the wheel to work loose as the vehicle
is driven, resulting in loss of control and an injury
accident.

Penetrating oil is not effective in removing tight wheels.
If it is used, however, apply it sparingly and only to the
wheel’s centerhole area.

2E – 8 TIRES AND WHEELS

D16A503A

90–110 N

Installation Procedure

Notice: Before installing the wheels, remove any build-
up of corrosion on the wheel mounting surface and the
brake drum or the rotor mounting surface by scraping
and brushing them with a wire brush. Installing the
wheels without good metal-to-metal contact at the
mounting surfaces can cause the wheel nuts to loosen,
which can later allow a wheel to come off while the ve-
hicle is moving. Wheel nuts must be tightened in se-
quence and to the proper torque to avoid bending the
wheel, the brake drum or the rotor.

1. Mount the wheel.

2. Install the wheel nuts in the diagonally. Do not tighten

the wheel nuts.

3. Lower the vehicle.

Tighten

Tighten the wheel nuts to 90–110 N

m (66–81 lb-ft).

ON-VEHICLE BALANCING

On-vehicle balancing will help correct vibrations due to
brake drum, rotor, and wheel cover imbalances.

Notice: Do not allow the front suspension to hang free.
When the drive axle is run at an extreme angle, extra
vibrations can occur, as well as damage to seals and
joints.

1. During on-vehicle balancing, do not remove the bal-

ance weights from the off-vehicle dynamic balance.

2. If more than 1 ounce of additional weight is required,

split the weight between the inner and the outer rim
flanges.

3. Spin the driven tire and wheel assemblies using the

engine.

OFF-VEHICLE BALANCING

Perform wheel balancing with an electronic off-vehicle
balancer. The balancer is easy to use and gives both a
static and a dynamic balance. Unlike on-vehicle balanc-
ing, the off-vehicle balancer does not correct for drum or
rotor imbalance. This drawback is overcome by its accu-
racy. Secure the wheel on the balancer with a cone
through the back side of the centerhole, not through the
wheel nut holes.

CORRECTING NON-UNIFORM TIRES

There are two ways to correct properly balanced tires
which still vibrate. One method uses an automatic
machine which loads the tire and buffs small amounts of
rubber from high spots on the outer two tread rows.
Correction by this method is usually permanent and, if it
is done properly, does not significantly affect the
appearance or the tread life of the tire. Tire truing with a
blade-type machine is not recommended because it
substantially reduces the tread life and often does not
correct the problem permanently.

Content .. 118 119 120 121 ..