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:

Test Requirements
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Introduction
This chapter contains information on the following subjects:  → Locking or unlocking the driver door manually  → Locking the front passenger door and rear doors manually  → Unlocking the tailgate manually  → Unlocking the selector lever lock manually If the vehic ...

Cleaning wheels
First read and observe the introductory information and safety warningsCleaning steel wheels An industrial cleaner is needed to remove accumulated brake dust. Steel wheels should therefore be cleaned regularly with a separate sponge. Any damage to the paint on steel wheels should be touched u ...

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