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Fiat Grande Punto Factory Service Manual (2005-2012)22 · Fault diagnosis
22 · Diagnostics

Tyre wear

Make
Fiat
Model
Grande Punto Factory Service Manual
Year
2005–2012
Section
Consumption /leaks/ wear › Tyre wear
Fault diagnosisTyre wear

TYRE WEAR

Test results
1CHECK TYRE WEARAll OKProblems encounteredOperation

Check tyre wear status. More specifically:

- wear on outer edge;

- wear on inner edge;

- wear on tyre shoulder;

- tread wear

Move on to Step 4

1. Uniform wear on both sides: inflation pressure low

2. Step wear on one side (outer or inner)

3. Wear on outer edge: exterior smooth

4. Tyre shoulder wear

5. Central tread wear: inflation pressure excessive

6. Uniform wear on tread surface: compound quality

7. Tread wear

1. Make sure tyres are inflated to the correct pressure. If necessary, replace the tyres

2. Move on to Step 2

3. Move on to Step 2

4. The problem is due to the customer''s over-sporty driving style: If necessary, replace the tyres

5. Make sure tyres are inflated to the correct pressure. If necessary, replace the tyres

6. Replace the tyres

7. Replace the tyres

2CHECK FRONT WHEEL GEOMETRYAll OKProblems encounteredOperation
Check the front wheel geometryMove on to Step 3Front wheel geometry not correct

Restore the correct geometry and replace the front tyres if necessary

Op. 4450A10 FRONT WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT - INCLUDES ADJUSTMENT IF NECESSARY

3REAR WHEEL GEOMETRYAll OKProblems encounteredOperation
Check the rear wheel geometryMove on to Step 4Rear wheel geometry not correct

Restore the correct geometry and replace the rear tyres if necessary

Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY

4SHOCK ABSORBER EFFICIENCY CHECKAll OKProblems encounteredOperation
Check the efficiency of the shock absorbersEnd of diagnosis

1. Front shock absorbers inefficient

2. Rear shock absorbers inefficient

1. Replace the shock absorbers.

Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/REASSEMBLY OF ASSEMBLY AT BENCH - R.R

If necessary, replace the front tyres

2. Replace the shock absorbers.

Op. 4420A30 REAR SUSPENSION SHOCK ABSORBER (ONE), LEFT OR RIGHT - R.R. - CHECK WHEEL GEOMETRY SEPARATELY

If necessary, replace the rear tyres

Parts & tools for this job For 2005 Fiat Grande Punto

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