I can say for sure... the tires on this thing suck hardcore. With just a little bit of slush on the road, it slides all over the place and I can feel the traction control cutting the power. This morning, I'm driving to work, and I'm stopping at a stop sign (I'm very gentle on the brakes), and the ABS kicks in ... the road was completely dry and clear, unless I hit some mystery patch of black ice, but I didn't see any. Even with slush/ice/snow with my old car, as long as I stopped gently, I never slid. I had pretty good tires on that though, Goodyear Assurance TripleTreds. I'm thinking the first major upgrade for my Sonic will need to be new tires ... not sure if I should wait until the warmer months, get new all seasons, and then get a set of winter tires in the fall.. or if I should deal with the stock tires for this summer, get winter tires in the fall, and get new all seasons next summer? I guess we'll see how I feel about these tires when the weather warms up.