I drive mine all winter in Michigan as well. Truthfully.......I think you are asking the wrong question........it's not the salt that's going to damage our cars, it's the damn potholes!

Bottom line......salt is a major cause of corrosion.......so, no, it will not do your car any good. Unfortunately, I think catching a chunk of concrete in the front end or windshield is worse, but the salt will get everywhere, especially when it's dry and dusty like it is today!