Volkswagen Touran Service 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. |
|
|
|
| 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. |
|
|
|
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:
Volkswagen Touran Owners Manual. Indicator lamp
Fig. 64 Warning lamp for front
passenger front airbag switched off in dash panel
First read and observe the introductory information
and safety warnings
Lit up
Location
Possible cause
Correction
Instrument cluster.
...
Volkswagen Touran Owners Manual. Introduction
This chapter contains information on the following subjects:
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Observe any country-specific legislation when securing your vehicle in the event
of a breakdown.
Additional information and warnings:
Preparation for working in the engine compartmen ...
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Diagonal Washouts
Permitted Tread Depth - Variance