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
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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:
Information stored in the control units
First read and observe the introductory information
and safety warningsYour vehicle is factory fitted with electronic control
units which are responsible for engine and gearbox management. The control units
also monitor the function of the exhaust system and the airbags.
These electronic con ...
Flat Spots
What is a Flat Spot From Standing?
Terms like flat portion, flattening, are also used as a term
for flat spots from standing.
Flat spots from standing cause vibration, like an
incorrectly balanced wheel. It is important ...
Replacing the battery
Fig. 21 Vehicle key: opening the battery
case cover
Fig. 22 Vehicle key: removing the battery
First read and observe the introductory information
and safety warnings
Volkswagen recommends having the battery changed at a Volkswagen dealership or
by a qualified workshop.
The battery is l ...
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