Do you wax your Z's bumpers?
 

I did a search of the forum and also googled this and couldn't fine a concrete answer. I was once told that you shouldn't wax anything that's made of fiberglass or plastic as it can cause bubbling or mess up the paint in other ways. I actually had this happen on my old Civic's spoiler(made of fiberglass). So does everyone here wax the entire car or just the metal parts? Just wondering....

I wax the whole car. I've owned Trans-Ams, and a Corvette and have always waxed the whole without a problem. :)

If its painted, I say polish/wax it.

wax that a$$!

Oh .. and we do have a detailing sub-forum :)

+1

Bumpers take a lot of crap: bugs, water spray from the road, etc. etc. Wax them well every time you wax the car to prevent damage to the paint.

yes.

I never wax my car I crystal guard it.

One of our great sponsors:

http://www.crystalguard.com/

I wax the entire car at least once a month, it's a habit I'm trying to stop.....not.
I tried CG also but stopped using it.

If you had that happen it was probably due to a bad job in the paint/prep department of wherever you got it painted. Wax is just a protectant and goes on top of the clear coat, it does not penetrate into the paint and therefore would not cause this to happen. If its got clear coat on it, wax it.