In the winter I ride on Continental Security tires, very treaded and very flat resistant. And very high rolling resistance. But I don't like fixing flats in the dark on the way to work. I will be changing back to my slick tires soon, when I am riding in the daylight instead of the dark on my way to work. My wonderful city fathers don't sweep streets with no curb, and the longest stretch I have on the way to town has no curb and is often littered with flat-makers. But doing a lot of road riding in the rain on my road bike, I have not noticed any difference between those commute tires and my road tires as traction goes.