Road test for rolling/pitching evaluation
- Make
- Alfa Romeo
- Model
- 159 Factory Service Manual
- Year
- 2005–2011
- Section
- General › Road test for rolling/pitching evaluation
ROAD TEST FOR ROLLING/PITCHING EVALUATION
- Carry out a road test on traffic free roads in safe conditions following the highway code.
- Before proceeding with the test, check the inflation pressure of the two vehicles, restoring the values to the correct ones if they are found to be incorrect.
- Also check the conditions of the wheel rims making sure they are not distorted or broken, replacing them if any faults are found.
- Carry out the test on a route where there are left and right hand bends of different degrees, evaluating the laying down speed of the vehicle round the bends, trying to take the bends at a constant speed, avoiding carrying out pull/release manoeuvres.
- Evaluate the stability of the vehicle by simulating a lane change/overtaking and check that violent vehicle reactions do not appear leading to unsafe driving during this manoeuvre.
- Then carry out a road test on an unmade road (cobblestones) where there are right/left hand bends of different degrees to evaluate the tendency of the rear of the vehicle to lose grip.
- This type of test should always be used for comparison with a new vehicle or reference vehicle of the same trim level and engine type, available in the workshop at the time of the test in question.
- At the end of the test in question, assess/rate the behaviour of the vehicle in terms of rolling/pitching in accordance with the enclosed table.
| Judgement | Vote |
|---|---|
| Poor | 3 |
| Mediocre | 4 |
| Just acceptable | 5,5 |
| Acceptable | 6 |
| Good | 7 |
The reference vehicle has a rolling/pitching default rating of 7.
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