I've been thinking of buying some headlight covers.

Question is, how do these install? I've heard horror stories about them flying out at high speeds. Do you snap'em, screw'em, or what?

 

They're held on by two clips, one on each side. The clips just stick to the nose using 3M mounting tape.

 

they will fly off at high speeds though. i've lost 2 myself on the freeway. particularly bad on windy days or going over bridges. i have a set of gts blackouts that are as good as new i'm selling for half the price of new ones if your looking to buy. alot of people either screw them down or glue them somehow but with the tinted covers thats a bad idea with visability at night.