I still have my stock shoes on the D with about half tread life on them. I'm wondering, though, since the winter is coming very soon, do I actually need to buy winter tires like Blizzaks or something? I've never had an awd vehicle so I'm wondering if you guys think I need something more aggressive for the snow or should I be ok? I'm in PA btw, we do get a decent amount of snow. And before someone mentions it, I'm not a huge fan of chains. Thanks!!