How much snow do you get? All season tires aren't any better than highway tires and don't last as long. They're softer than highways and wear out faster. If you need snow tires, get a spare set of rims and put on REAL snow tires for winter and REAL highway tires for summer. You'll get better performance year round that way.
We are lucky to get a few inches a year of snow, If I lived someplace that snowed a lot , there would be another set of snow tires in the garage and chains.
