I have a Tequipment bra for my Cayenne. I have used it in the past when on long road tips, but I'd lke to hear opinions on using it when I might be driving through rain.

 

I'm assuming it's one of those black bras. The only problem with those black bras is that you may get some scuff marks where the bra rubs on the paint. As far as rain goes, you may trap moister under the bra and if not removed, it will get absorbed into the clear coat and make it cloudy. I guess if using it on long trips, install it and then remove it when not driving for long distances. Hope this helps.

 

Yes, you are correct, it is the black 2-piece Tequipment bra- 1 for the hood, 1 for the bumper; plus, I have the ones for the side-view mirrors as well.
The trip is 11 hours long, and I plan to tale it off as soon as I arrive, turn it inside-out, let it dry, and clean the interior side before putting it on for my ride home.
I never ride with it local, but I will be on over 500 miles of interstate with everything from bugs to rocks coming at the front of my Cayenne.