hey friendo, your 2007 BMW 328i uses the latest type of car rack system that mounts to the fixpoints on your car top. Fixpoints are becoming increasing common on new model cars. Manufacturers are including these fixpoints, which offer the option of attaching a roof rack if desired.
The only car rack company that has successfully designed for these fixed attachment points is, in fact, Thule Racks. And the
Thule 460 Podium roof rack system is engineered to fit the fixpoints on your 2007 BMW 328i sedan. The Thule 460 Podium system includes four 460 Podium Feet, four 3028 Fit Kit brackets (these Fit Kit brackets are specific to your BMW 328i and mount to the fixed attachment points located on your car top) and two load bars (the 50" load bars are the recommended length for your vehicle's roof top). You can then attach the Thule roof bag to the front and rear load bars.
Thule Racks also makes the
Thule 460R Rapid Podium car rack system. It works exactly the same way as the regular 460 Podium and uses the same Fit Kit brackets. However it uses the very sleek, low profile and premium looking Rapid Aero load bars. You will need to choose the RB47 inch bars for your roof top.