I tried out my new 28c(back) and 25c (front) tire setup this morning (bought it for a ride I am doing this weekend in the woods and includes 14 miles of dirt roads). I tested them on a canal road that follows my commute. They worked great. I also noticed that the pavement seemed a lot smoother with bigger tires on. I am sorely tempted to leave them on for commuting permanently. I didn't go much slower than usual and not having to worry' about every little piece of debris in the road was very nice. I was able to actually ride IN the bike lane instead of next to the white line where the cars sweep the debris into the rest of the lane. Had a great ride, and got to ride a little dirt (3 miles) to boot! Nothing better than that I figure, oh yeah, temps were in the 70's.