Hi people. I have been looking for some roof racks for my a6 avant and so far been pretty busy looking on the bay and gumtree etc. Ive been looking on the parts database aswell for any others that will fit my model. While browsing though I have noticed there aren't loads of options for the closed rail cars like mine. My question is this if a set of roof racks is designed for closed rails and the feet of the racks can be adjusted on the bars then surely a set for an A4 Avant for example will fit as the holes and the rail are the same but with the width of the being different the adjustability of the feet will compensate for the difference. In simple terms will an adjustable set for a different model fit a range of cars with the closed rail system.