Originally Posted by stevel610

I cut open the rear Randonneur which had begun to get a little squared off across the tread and the tread cuts were almost worn away. I was suprised to see how much rubber was left and the layering inside. They have a red strip just under the tread rubber which looks like it is the main protection layer. It looked to be almost 1/8" material total. It would be very difficult for something to get through (hence no puncture flats). I'll wear down to the red if I use them again.