Audi 8V3.071.126 Instrucciones De Montaje página 39

The gap -a- must not exceed 1 mm.
– Tighten the hexagon bolts -2- to 8 Nm.
– Repeat the procedure on the other roof bar.
WARNING
Check that all hexagon bolts have been tightened (8 Nm). If
this guideline is not observed, this can result in the roof
bars becoming loose or falling off — risk of accident!
Installation instructions - Audi A3 (8V3) 2012 ▶
4 Installing/removing roof bars on vehicle
Edition 06.2012
17