VW Polo manuals

Volkswagen Polo Service & Repair Manual: Tire Wear, Center

This wear pattern is found on drive wheels on high-powered vehicles that often drive long stretches at high speed.
At high speeds, the centrifugal force increases the tire diameter at the center of the tread more than at the shoulders of the tire. The drive forces from the center area of the tread are transferred to the road surface. This is reflected in the wear pattern.
These effects can appear especially extreme on wide tires.
Reducing the Tire Pressure is Not an Effective Remedy for this Wear Pattern.
  WARNING
For safety reasons, tire pressure must never be lowered below specified pressure under any circumstances.
A largely even wear pattern can be achieved if tires are changed in a timely manner from the tractive to the non-tractive axle.
   
Increased Tread Wear
Typical wear pattern of tires on the tractive axle of high-powered vehicles.
The increased wear at the tread center is caused by stresses related to the centrifugal force of the tire and the transmission of traction forces.
 

Tire Wear, Center

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

Permitted Tread Depth - Variance
For all four wheels use only tires of the same construction type, and tread. Always use tires with the deepest tread depth on the front a ...

Other materials:

A/C Service Station, Emptying
  Caution If it is suspected that chemicals were added to the refrigerant circuit to seal leaks, do not connect the A/C service station and do not extract the refrigerant. ...

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 change ...

Changing bulbs in the side turn signals
Fig. 188 Removing the side turn signal bulb Fig. 189 Side turn signal: changing the bulb First read and observe the introductory information and safety warnings Depending on the vehicle, the side turn signal may be located in the front wing or in the exterior mirror . Please contact a ...

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