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:
Adhesive Surface Pretreatment when Replacing Laser-Soldered Roofs
Dry sand the cataphoretic primer on the roof adhesive surface
-item 6-
→ Item down to the bare metal using P180 sandpaper.
–
Dry sand the roof pillar adhesive surface
...
Stowage compartment in the front passenger footwell
Fig. 99 In the front passenger footwell:
stowage compartment for high-visibility waistcoat
First read and observe the introductory information
and safety warnings
Opening and closing the high-visibility waistcoat stowage compartment
To open, grip the handle (arrow) and pull the cover out of ...
Description and function of the airbags
First read and observe the introductory information
and safety warnings
The airbags can protect vehicle occupants during frontal and side collisions
by reducing their movement in the direction of the collision.
When an airbag is triggered, it is inflated by a gas generator. This causes the
...
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Heel and Toe Wear
Tire Wear, One Sided