Workshop Manuals Factory service & repair Alfa Romeo
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Transmission (4x4)12 Axles and driveshafts13 Brakes14 Steering15 Suspension and wheels16 Heating, air conditioning and auxiliary units17 Electrical equipment18 Body fittings19 Body panels and frame20 Wiring diagrams and electrical functions21 Wiring harnesses22 Connectors and pin-outs23 Fault diagnosis24 Special tools
Alfa Romeo 159 Factory Service Manual (2005-2011)15 · Suspension and wheels
15 · Steering & suspension

Road test for comfort evaluation

Make
Alfa Romeo
Model
159 Factory Service Manual
Year
2005–2011
Section
General › Road test for comfort evaluation
Suspension and wheelsRoad test for comfort evaluation

ROAD TEST FOR COMFORT EVALUATION

Check 44A

- 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 an uneven road surface, at a speed of 40 km/h to check the capacity of the suspension to absorb the stresses produced by small imperfections (suspension damping) with the consesquent acoustic repercussions inside the passenger compartment.

- Check the capacity of the suspension to absorb the stresses produced by large imperfections and the consequent acoustic repercussions inside the passenger compartment, carry out the road test at a speed of 40 km/h over a route that has a series of pot-holes.

- Check the rapid damping of any pitching produced by the irregularities in the road surface, carrying out the test at a speed of 50 km/h on a straight road with suitably spaced humps and holes.

- 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 driving comfort of the vehicle in accordance with the enclosed table.

JudgementVote
Poor3
Mediocre4
Just acceptable5,5
Acceptable6
Good7

The reference vehicle has a driving comfort default rating of 7.

Parts & tools for this job Staging For 2005 Alfa Romeo 159

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