Living in the West with chemical deicer on the highway...it is imperative to wash it off and I regularly use a carwash through the Winter. No wheel scratches or tire scuffs and no stuck Xfire. Most of the newer washes belong to an association that prescribes how wide the tracks should be to accommodate virtually any vehicle. If in doubt, check with the wash manager. The wash I use will accommodate a HUMMER, which seems to be the largest/widest vehicle that is considered passable through a tunnel type wash. Good luck.
Chris