or at least not enough to bother taking them off. Nor do they hurt MPGs. In fact, I'm getting about 1.2 more MPGs since racks installed, as best as I can tell. Maybe it my Prime just getting "broken in" at the 2,000 mile mark. Lots of people were saying the factory roof racks were very noisy and they were getting $100 Rhino attachments to defect wind (and reduce noise). Granted, I normally drive with earbuds, but I could barely talk myself into hearing any more noise at 65mph, with our without buds. You guys sure you got racks installed correctly and no bad gaps between rack and roof?