Measuring tread depth

Make

Audi

Model

A3 Mk1

Section

Wheels, tyres. axle align › Tyre requirements and tyre maintenance › Measuring tread depth

Running gearMeasuring tread depth

Measuring tread depth   Note t  The tread depth is measured in the main tread channels. t  Do not measure at the TWIs (Tread Wear Indicators). Measure the tread depth in the main tread channel, at the points where the tyre is worn most heavily. The main tread channels can be identified by the TWIs (tread wear indicators). The position of the TWI indicators is marked at various points on the sidewall of the tyre. The bars of the TWI have a height of 1.6 mm. This is the minimum tread depth required by German law. Different values may apply in other countries.

The TWI indicators must not be included in the measurement. Tread depth should always be measured at the deepest point of the tread channel. A -  TWIs (tread wear indicators) in main tread channel. These indicators are marked at 6 points around the sidewall of the tyre. B -  -P- is the depth of the main tread channel

Tread wear indicator - TWI TWIs → Remark are marked at 6 points on the circumference of the sidewall. 1)  TWI = tread wear indicator

01 Steering & suspension

The same page in: A3 Mk2.