Volkswagen Polo Service & Repair Manual: Tread Depth, Measuring
 Note
| When measuring tread depth, take measurements in the main
grooves. |
| Do not take measurements at the tread wear indicator. |
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| Tread depth of a tire must be measured in the main grooves
at the points showing the most wear. The positions of the tread
wear indicators are marked along the tire shoulder
-item 2-
→ Item. |
| In place of “TWI”, there may also be a “Δ” or “VW emblem”. |
| The TWI protrusions are 1.6 mm tall. This is the minimum
tread depth legally prescribed in Germany. |
| Different values may apply in other countries. |
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| Tread Wear Indicators (TWI) must not be included in the
measurement. The deepest point of the groove must be used for
the measurement. |
| A - |
Tread Wear Indicators in main grooves |
| B - |
Main grooves with Tread Wear Indicators
-arrows- |
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Heel-and-toe wear is step-like wear of individual tread
blocks, due to which an increased rolling noise can develop. The
heel-and-toe wear is caused by the uneven dis ...
In many causes, this is caused by driving style, but
sometimes it is also caused by incorrect axle adjustment.
...
Other materials:
Fitting the removable ball coupling
Fig. 91 Overview: removable ball coupling
First read and observe the introductory information
and safety warnings
The removable ball coupling is located under the luggage compartment floor with
the vehicle toolkit.
Key for :
Cap
Ball coupling
Retaining balls
Catch for locking ...
Introduction
This chapter contains information on the following subjects:
→ Vehicle key
→ Indicator lamp in the vehicle key
→ Replacing the battery
→ Synchronising the vehicle key
Additional information and warnings:
Settings in the Volkswagen information system
...
Removing the ball coupling
First read and observe the introductory information
and safety warnings
Unhitch the trailer .
Remove the cover from the lock on the handwheel.
Insert the key ⑧ into the lock and turn it clockwise.
Hold the ball coupling tightly in your left hand .
Use your right ha ...
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Heel and Toe Wear
Tire Wear, One Sided