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:
Handling wheels and tyres
Fig. 145 Diagram showing how to swap wheels
First read and observe the introductory information
and safety warningsThe tyres are the most used and most underestimated parts
of a vehicle. Tyres are very important as the narrow tyre surfaces are the only
contact between the vehicle and the ro ...
Introduction
This chapter contains information on the following subjects:
→ Drink holders in the centre console
Bottle holder
Bottle holders for bottles containing up to 1.5 litres are located in the open
stowage areas of the driver and front passenger doors.
Additional information and warnings ...
Switching the front passenger front airbag on and off manually using the key-operated
switch
Fig. 58 In the stowage compartment on
the front passenger side: key switch for disabling and enabling the front airbag
on the front passenger side
First read and observe the introductory information
and safety warnings
The front passenger front airbag must be switched off when securing a
...
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Diagonal Washouts
Permitted Tread Depth - Variance