Volkswagen Polo Service & Repair Manual: Corrective Action When Vehicle Pulls to One Side
| Test Conditions Before and During the Road Test |
| – |
Check all suspension components on front and rear axle for
damage. |
| – |
Check tire pressure and correct if necessary. |
| – |
Check the tires for external damage. Holes, cuts, bulges in
the side wall, flat spots from braking and/or damage to the
tread. |
| – |
Ask the customer if a tire had been damaged by a nail or
similar object and perhaps repaired by a tire dealer. You may
have to replace such tires. |
| – |
Check tires for even wear and tread depth. |
| – |
Are all tires of the same type, manufacture and tread
pattern? |
| – |
If the tires are non-directional, ensure that all DOT
classifications on the tire face outwards. It may be that the
vehicle's wheels and tires were already changed around at an
earlier date. |
| – |
Are the tire brands factory recommended as initial
equipment? |
| – |
For the road test, use a level, straight driving surface
that does not slope off to one side and does not have ruts. |
| – |
Perform the road test with the customer under the conditions
specified above. The customer should demonstrate the problem. |
 Note
| There should not be any side wind when road test takes
place. |
| If the complaint is justified, it is recommend to rotate the
wheels and tires as described on the following pages. |
| Before beginning, observe the following notes, otherwise all
effort will be for nothing! |
Note
| Mark tires/wheels before the first rotation, e.g. LF, RF, LR,
RR. |
| After rotating wheels or reversing the tire on its rim,
observe very carefully how the vehicle behaves during the road
test. Note what was replaced and how. |
| The intensity or any possible change to the one-sided
pulling should be assessed. |
| To do this, it is absolutely essential that the road tests
are always performed by the same person on the same road. It is
best to drive the “test course” in both directions. |
| Replacing a tire with a new tire does not guarantee that
pulling to one side will be eliminated. Therefore, it is
recommended to perform a targeted exchange of the wheels as
described below. |
| If there are large differences in the tread depth of the
tires on the front and rear axles, the tires with the deeper
tread should always be mounted on the front axle. |
|
|
|
Targeted Rotating of Wheels for Non-Directional Tires
| ↓ |
|
Perform a road test to determine if a vehicle pulls to one side and if
so, when and to which side |
| ↓ |
| If
the vehicle pulls to one side, swap the front wheels. |
| ↓ |
|
Road Test, Performing |
|
Vehicle travels straight - END |
|
Vehicle pulls opposite |
Vehicle pulls to the same side |
|
↓ |
↓ |
|
Reverse one tire on its rim on the front axle (reverse the direction of
travel) |
Rotate wheels from front to back |
|
↓ |
↓ |
|
Road Test, Performing |
Road Test, Performing |
|
Vehicle travels straight - END |
Vehicle travels straight - END |
|
Vehicle does not travel straight |
Vehicle does not travel straight |
|
↓ |
↓ |
|
Swap front wheels and swap back wheels |
Vehicle
pulls opposite |
No change |
|
↓ |
↓ |
↓ |
|
Road Test, Performing |
Reverse one tire
on its rim on the front axle (reverse the direction of travel) |
Check alignment
of front and rear axles, adjust if necessary. |
|
Vehicle travels straight - END |
|
If adjustment is correct,
inform Product Support. |
|
Vehicle does not travel straight |
|
|
|
↓ |
|
|
|
Swap the front wheels |
|
|
|
↓ |
↓ |
|
|
Road Test, Performing |
Road Test,
Performing |
|
| Vehicle
travels straight - END |
Vehicle
does not travel straight |
Vehicle
travels straight END |
|
| |
↓ |
Vehicle
does not travel straight |
|
| |
Install
new tires on front axle |
Install
new tires on front axle |
|
| |
↓ |
↓ |
|
| |
Road Test,
Performing |
Road Test,
Performing |
|
| |
Vehicle
travels straight - END |
Vehicle
travels straight - END |
|
| |
↓ |
↓ |
|
|
Vehicle does not travel straight, inform Product Support |
Wheels, Targeted Rotating for Directional Tires
| ↓ |
|
Perform a road test to determine if a vehicle pulls to one side and if
so, when and to which side |
| ↓ |
| If
the vehicle pulls to one side, swap wheel with tire front and back. |
| ↓ |
|
Road Test, Performing |
|
Vehicle travels straight - END |
|
Vehicle does not travel straight |
| ↓ |
|
First, replace one tire on the front axle |
| ↓ |
|
Road Test, Performing |
|
Vehicle travels straight - END |
|
Vehicle does not travel straight |
| ↓ |
|
Replace second tire on the front axle |
| ↓ |
|
Road Test, Performing |
|
Vehicle travels straight - END |
|
Vehicle does not travel straight |
| ↓ |
|
Measure vehicle at front and back |
| ↓ |
|
Road Test, Performing |
|
Vehicle travels straight - END |
|
Vehicle does not travel straight, inform Product Support |
Taper is caused by slightly offsetting the tread and/or the
belt by a few tenths of a millimeter from the geometric center
of the tire. Taper cannot be recognized vis ...
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First read and observe the introductory information
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Lit up
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Taper
Vibration