Today on our 2013 Audi Q5, we'll be test fitting the Thule Sonic XXL Rooftop Cargo Box. That's part number TH636S. That offers 22 cubic feet of space. With our Thule Aeroblade Podium Roofrack system already installed on our vehicle, we'll go ahead and put our cargo box on our load bars. You want to make sure that your clamps are opened up. You'll also want to make sure your box is all the way… see more >