Not sure if this particular issue has ever been brought up. I did a search and found a lot about the roof racks, but this issue seems to be more about the roof itself. Who knows, maybe it's the roof rack and I just don't know. A lot of the times, mainly on the highway, it sounds like the roof is popping up and down. The material that the roof is made out of is very thin, so I wasn't sure if this was just a common issue with Crosstrek's or not. First time it happened, it scared the crap out of me, thinking my roof was going to fly off haha. Never had a roof rack on previous cars, so I wasn't sure if that's common with cars that do have them. Has anyone had this issue, if so, were you able to fix it? Thank you.