It happens to my 99 Forester, this 2005 XT, and a friend's 2009 wagon in any location where large wind farms are common.
I doubt new stripping would help. The windows bow out. It goes away if a semi blocks the wind, we drive behind a small hill, or the road turns so that the wind isn't at that perfect angle to create the vacuum. If there are strong gusts, the windows can get pushed out 3/4 inch briefly. It help to actually roll the window down a slight bit, which seems to equalize some pressure and allow the windows to recontact the molding, except that then I have a window slightly open, which causes the same noise problems I want to avoid.
I'm considering getting a bit drastic and having an attachment to the roof rack that can clamp the windows against the weather stripping during long drives.
Last edited by dahoseman; 02-17-2013 at 12:06 AM..