July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Tires, Checking Condition And Wear Pattern; Tread Depth, Checking And Entering: Notes

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Test Pin: T40139 or Test Pin: T40139A : to measure the tread depth, use the side with the thicker measuring pin and collar (scale labeled with the tire symbol).

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