Tread Depth, Checking

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Special tools and workshop equipment required

Test Pin T40139

Fig 1: Test Pin T40139
Courtesy of AUDI OF AMERICA, LLC

NOTE:

The tread depth scale is indicated by a tire symbol.

-- Ascertain the tread depth of all the tires (including spare tires) with a Test Pin T40139 and record in the maintenance table.

Minimum tread depth: 1.6 mm

NOTE:

The minimum tread depth is reached when the tires have worn down level with the 1.6 mm high tread wear indicators -arrows- positioned at intervals around the tire.

Fig 2: Tire Tread Wear Indicators

Courtesy of AUDI OF AMERICA, LLC

This value may vary for individual countries due to different legislative regulations.

If the tread depth is nearing the legally allowable minimum tread depth, inform the customer of this.