It's been great, but warm riding weather. Unfortunately, I got a flat on my front tire on Friday, then today, just after the ten miles I rode to get to a multi use trail...and actually thinking to myself, "Well, at least I don't have to worry about glass and crap on this leg of ride", I flatted on my back tire. So...when I got home I figured I must have about 2,000 miles on my tires so I ordered some new tires and this time so puncture resistant tubes which I've never used before. Anyone have any experience with them? Are they any harder to change than regular tubes?