[MatthewAMEL]

Outdoor car covers are a bad idea.

The sides act as air pumps and force particles across the paint. No matter how tight you think the edges are, dirt/dust will get in and you will wind up with tiny, 1/2-1" scratches all across your paint.

If you can't garage it, cover it by any method that does not allow the cover to come in contact with the car.

I learned this lesson the hard way.