Front flaps require you to screw in to the bottom of the car. I ended up jacking it up and put a dab of silicon on the screw before drilling into the bottom of the side skirt so that I could get a perfectly flat screw head in.
I didn't want to do it originally but it definitely makes the front flaps as secure as the rear.
I didn't want to do it originally but it definitely makes the front flaps as secure as the rear.