Aluminum Wheels
Radial Run Out: 0.8 mm (0.03 in)
Face Run Out: 0.8 mm (0.03 in)

Steel and Aluminum Wheels
Free Radial Run Out: 1.5 mm (0.06 in)

4.4.4.7 Tire Abnormal Wear Diagnostic

There are many reasons for abnormal and premature tire wear, including the inflation pressure is incorrect, no regular tire rotation,
bad driving habits or the wheel alignment is incorrect. If the tire wear and there is a need to re-adjust the wheel position, as long as
within the specifications, make sure to adjust the toe as close to zero as possible.

If there are following conditions, rotate tires:

A. Front tire wear is different from the rear tire.

B. Left front and right front tire wear is different.

C. Left rear and right rear tire wear is different.

If there are following conditions, check the wheel alignment:

A. Left front and right front tire wear is different.

B. Any front tire uneven tread wear.

C. Front tire tread has feather scratches.

Several typical tire wear situations are shown as following:

1. Eccentric Worn

FE04-1016b

Reasons:

A. Axles, bearings and other rotating parts malfunction.

B. Braking system.

C. Emergency start, emergency braking.

D. Uneven wheel weight center.

E. Tire and wheel rim sizes do not match.

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Wheels and Tires

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2. Sidewall Feather Worn Pattern

FE04-1017b

Reasons:

A. Toe value is incorrect.

3. Abnormal Wear and Tear:

FE04-1018b

Reasons:

A. Camber is incorrect.

B. Toe value is incorrect.

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Suspension System

4. Abnormal Wear and Tear:

FE04-1019b

Reasons:

A. Dynamic balance is incorrect.

B. Four wheel position is incorrect.

4.4.4.8 Excessive Tire Wear Diagnostic

Step 1

Check whether the wheel positioning is normal?

No

Adjust the wheel positioning.

Yes

Step 2

Access to the vehicle maintenance records, should tire rotation be carried out? Have tires been rotated as
specified?

No

Rotate tires. Refer to the

4.4.2.3

 

Tire

Transposition

Yes

Step 3

Check whether the tire balance is normal, tire pressure is normal?

No

Adjust the tire pressure to the standard value.
Carry out the tire balancing.

Yes

Step 4

No overload situation.

No

Explain to the user the importance of
maintaining a reasonable load.

Yes

Step 5

Check whether the coil spring is working properly?

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Wheels and Tires

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No

Replace the coil spring. Refer to 

4.2.7.4

 

Front

Shock Absorber Components and Spring
Replacement

Yes

Step 6

Check whether the strut assembly is working properly?

No

Replace the faulty component.

Yes

Step 7

Check whether the lower control arm is working properly? (wear, loosen, etc.)

No

Replace the lower control arm. Refer to

4.2.7.1

 

Lower Control Arm Replacement

Yes

Step 8

Check whether the wheel bearing is working properly? (wear, loose, etc.)

No

Replace the wheel bearing. Refer to

4.2.7.9

 

Front Wheel Hub Replacement

Yes

Step 9

Check whether the lower control arm ball joint and the steering tie rod ball joint are working properly? (Wear,
Loose, etc.)

No

Tighten the nuts. If necessary, replace the the
lower control arm ball joint and the steering tie
rod ball joint.

Yes

Step 10

Check whether the wheel run out is normal? Refer to 

4.4.4.6

 

Wheels Run Out Inspection

.

No

Reassemble the tires. If necessary, replace
the tires or wheels.

Yes

Step 11

Confirm that failure has been ruled out.

4.4.4.9 Vehicle Waddle Diagnostic

Step 1

Check whether the tire balance is normal, tire pressure is normal?

No

Adjust the tire pressure to the standard value,
carry out the tire balancing.

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Suspension System