We have a 2011 Hyundai Santa Fe that we installed them on. While the post wobbles a bit (the factory crossbar is a bit wider than the post), we've set up 2 kayaks on the Santa Fe and have taken freeways and winding roads to the rivers and had no problem with it. There's a bit of trembling that you can noticeably see when you're going behind the Santa Fe with kayaks set up, but unless you tie them down, the kayaks won't go anywhere.
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