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:
Insulating glass windscreen
Fig. 71 Metal-coated windscreen for infrared
reflection with communication window (blue area)
First read and observe the introductory information
and safety warnings
Insulating glass windscreens have a coating which reflects infrared radiation.
There is a non-coated area above the interior ...
Battery Post/Terminal
WARNING
Risk of injury. Follow all Warnings and Safety
Precautions. Refer to
→ Chapter „Warnings and Safety Precautions“.
Caution ...
Tyre damage
First read and observe the introductory information
and safety warningsDamage to tyres and rims is often not readily visible.
Any unusual vibrations or signs that the car is pulling
to one side may indicate that one of the tyres is damaged .
Reduce your speed immediately if you suspect th ...
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Heel and Toe Wear
Tire Wear, One Sided