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:
Checklist
Observe the following information both before and during every journey
to ensure your own safety, and the safety of all passengers and other road users
:
Check that all lights and turn signals are
working properly.
Check the tyre pressure Wheels and tyres
Wheels and tyres Tyres ...
Tires, Reinforced, Extra Load
Some time ago, the designation “Reinforced” was replaced
with the designation “Extra Load” by some tire manufacturers. In
countries outside Europe, this designation has been conventional
for some time. There are no technical differences.
...
Vehicle Electrical System, General Repair Information
Caution
Follow the procedure in the repair manual when
disconnecting and connecting the battery.
WARNING
Some tools are supplied wit ...
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Heel and Toe Wear
Tire Wear, One Sided