I was riding the Florence Sand Dunes last week in both rain and sunshine. When I made a hard right or left turn, we'd get blasted with sand. I have OEM flares. I put duct tape from the upper side mirror mount to the area directly below near the front edge of the door. I filled in the triangle area temporarily with duct tape. Fortunately it stopped the majority of the sand coming in, stopped a lot of rain coming in and reduced the amount of cold air coming in. I'm currently putting brackets on the "A" pillar for mounting clear lexan with the trailing edge bent outwards. I've seen numerous YouTube videos of X3s with clear plastic taped to the "A" pillar. Any feedback or opinion on these winglets?