Rattling Exhaust?

Rattling Exhaust?

I have two 12" kicker comps in my trunk and they hit pretty hard. The trunk rattling is understandable, but there's some rattling coming from underneath my car. My friend tells me that it's my exhaust hitting the underside of my car.

I was wondering if that's dangerous or if anyone else has that problem and if there is a way to fix it. Thanks.

It isn't the plates, I put some stuff to prevent that from rattling. Hm... would a heat shield rattling be bad?

It's stock. It's from underneath the car. What do you mean by tags?

I dunno, it did seem like he was right. We were checking out the rattling the night we finished the install. We knew it was gonna happen, I was gonna get some dynamat in the future. I fixed up the license plate so it wouldn't rattle. I was just wondering if it'd be bad if my exhaust was rattling up and down.

Hm... not sure what else it could be, I might just pump it up and check it out early morning before the commute.