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.
...
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→ Contents of the breakdown set
→ Preparation
→ Sealing and inflating tyres
→ Test after driving for 10 minutes
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