I live in PA and we use the brine and salt. I see rust on every make, no one is immune to it. I am fortunate to have a heated garage and I thoroughly wash out underneath the vehicle at least once a week. That seems to be key because I have no rust issues, even on my 2003 Chev Silverado.
I was reading an article the other day you may want to check out since you live somewhere that uses a lot of brine. The article stated heated garages allowed the brine to be more corrosive because of the temperature inside. This article was advocating leaving the vehicle outside until it could be washed off. Not sure if it is true but I'd consider it if I had to deal with that all winter long.
Thankfully where I live in VA we don't see much snow and they do not use a lot of salt...mainly sand and cinders.
