VW Polo manuals

Volkswagen Polo Service & Repair Manual: Tire Wear, Outer Shoulder

Improper Use of Air Suspension Height Adjustment
The use of off road levels is only recommended when driving off road. The permanent use of off road levels on normal roads can lead to increased tire wear because the changed height changes the wheel alignment relative to the road level.
To Prevent One-Sided Tire Wear, Correct Axle Geometry Adjustment Should be Ensured On the One Hand, and Intended Use of the Vehicle on the Other Hand.
Good vehicle and tire maintenance helps to prevent tire wear. The following points should especially be observed.
The specified minimum tire pressures must be maintained.
Different wear on front and rear axle cannot be avoided depending on driving style. This can be counteracted by regular tire rotation. This lends itself, for example, to the rotational change from summer to winter tires and back. This change has the positive side effect of all tires wearing evenly so a complete set of new tires can be installed. This prevents use of different tire tread depths on both axles, which can have negative effects on driving behavior.
The formation of heel and toe wear is a normal wear pattern, particularly with a very smooth driving style. Refer to → Chapter „Heel and Toe Wear“. This could result in a louder rolling noise which are generally improved with increased tread depth. If heel and toe wear is light or is still forming, exchanging tires on both sides is generally sufficient. With strong heel and toe wear, tires should be rotated according to so that their direction of travel is reversed. Refer to → Chapter „Heel and Toe Wear“. This does not apply to non-directional tires!
On some tire profiles, the effect of premature wear can be detected visually: If winter tire ribs or profile recesses have been worn off, only compact profile blocks without tread pattern, which gives the impression of a worn tire. In this case, the remaining profile depth in each tread groove must be measured. If it is greater than the legally required minimum tread depth (Germany 1.6 mm; it is recommended to use winter tries with a remaining profile of 4 mm only in summer use [regulation in Austria]), the tires can be reused without restrictions.
   
Tire Wear, One Sided
In many causes, this is caused by driving style, but sometimes it is also caused by incorrect axle adjustment.     ...

Diagonal Washouts
Diagonal wear spots on tires Diagonal wear spots run at an angle of approximately 45° with respect to the plane of circumference. ...

Other materials:

Checking with Restrictor, Reservoir and A/C Compressor Regulator Valve -N280-, Externally Regulated A/C Compressor
  Note Connecting service station. Refer to → Chapter „Connecting Service Station“. Observe test requirements. Refer to → Chapter „Pressures, Checking“. –  ...

Tire Pressure Monitoring Sensor without Valve, Removing and Installing, Vehicle Before Customer Delivery
Special tools and workshop equipment required Torque Wrench -VAG1410- Perform the Following: Removing –  Remove the tire from the disc wheel. &nb ...

Wire Break with Single Repair Point
Repair point with single crimp connection –  Free up wire intended for repair (approximately 20 cm to both sides of repair point). –  If required, remove wiring harness wrapping using a folding ...

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