The phrase "wind buffeting" means strong gusts of wind constantly hitting or pushing on something or someone, causing it to shake or move forcefully. Full definition
Roof off, there's little wind buffeting at normal speeds, mainly because of a cast - aluminum deflector element that attaches to the top of the windshield and does a great job of deflecting airflow over and above the cabin. (autoweek.com)
Surprisingly little wind buffeting with the top down and windows up, if you need a third. (automobilemag.com)
Burning south back down PCH, roof still open: If you don't mind looking a bit dork - ish, keep the side windows up and you're in a very tranquil environment, with little wind buffeting across the top of your head, and not much air flowing behind or swirling around your noggin. (autoweek.com)