I spoke with my contact at Thule and he said if your 2014 Audi RS5 has a bare roof, Thule does not recommend installing a roof rack on vehicles equipped with the glass roof.
I also spoke with my contact at Rhino-Rack and he said they have no prohibition against using their roof racks with sunroofs. I recommend the Rhino-Rack Vortex Roof Rack system, which includes the Vortex Aero Crossbars, # RRVA126B-2, the 2500 Series Leg Kit, # RRRLKVA, and Custom DK Clamps and Pads, # DK312. This is... view full answer...