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

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