[bcj]

Check that the aero panels and fender liners are all buttoned up tight.
The plastic fasteners (seem to be made of soft cheese) that hold things together can pop out.
Then stuff can flap around when wind starts blowing through.

When I hit a chunk of retread on the freeway at night, the inner fender would bend and come into contact with the inside edge of the front tire.
Looked fine at a stop, but air would bend it once it got moving.

The Interconnectedness of Everything is important.