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. |
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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. |
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Diagonal wear spots on tires
Diagonal wear spots run at an angle of approximately 45°
with respect to the plane of circumference.
...
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:
Exterior Lights, Switches
HID Headlamp Usage and Safety Precautions
Special tools and workshop equipment
required
Protective Eyewear
Gloves
–
Note the following if working with HID headlamps:
...
First aid kit and warning triangle
Fig. 153 In the luggage
compartment: holder for the first aid kit
Fig. 154 In the luggage
compartment. A: Warning triangle under the loading edge, B: Warning triangle in
the vehicle tools
First read and observe the introductory
information and safety warnings
First aid kit
A first-ai ...
Diesel particulate filter
First read and observe the introductory information
and safety warningsThe diesel particulate filter filters out soot particles
in the exhaust gas. The soot particles gather in the filter and are burnt under
high temperatures periodically (regeneration). Heat produced can
warm the engine.
...
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