Volkswagen Polo Service & Repair Manual: Tread Depth, Measuring

Volkswagen Polo Service & Repair Manual / Whels, Tires, Whel Alignment / Tire Wear / Tread Depth, Measuring

Note

When measuring tread depth, take measurements in the main grooves.

Do not take measurements at the tread wear indicator.

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.

Tread Depth, Measuring

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-

Tread Depth, Measuring

Heel and Toe Wear

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 ...

Tire Wear, One Sided

In many causes, this is caused by driving style, but sometimes it is also caused by incorrect axle adjustment. ...

Other materials:

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Tires, Dismounting, Run-Flat Tires and Ultra High Performance Tires
Only trained personnel can perform the assembly work on run-flat tires and ultra high performance tires. If equipped check the tire pressure monitoring sensor with the vehicle diagnostic tester and if necessary replace. ...

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As with the tire, the supporting ring is generally not replaced after driving with flat tire. Replace the support ring if the following damages have occurred: Blowouts or mis ...