I live in the Boston area (please hold the jokes), and the DTS has been excellent on the snowy roads. I attribute it to the heavy weight of the car and the front wheel drive. Drove on the highway last night in snow and sleet and felt very solid. Good all season tires don't hurt. This is the land of the all wheel drive vehicle, but I have had very little slippage. Not on the level with my Explorer's 4x4, which can get out of drifts on its own, but that's a different animal.