Quote Originally Posted by minircc View Post
I have never used them myself, however I think if it's just held on by 3M double sided tape it might just come off over time. Especially after a season of winter rain.
Also, if you scrape it, it might just come right off. Or you might have half of it dragging under the car.

Will be interested to hear from anyone who has tried them though.
From a tutorial I saw it was also attached on with small screws every 5-10cm or something to avoid this, think I saw it on a US forum.