My strangest flat happened because of a strange brand of rim tape. I bought the stuff at Nashbar maybe 6 or 7 years ago. It was orange and made of polyurethane or something. I can’t remember the manufacture. I was showing off my brand new Cannondale road bike that I had built up from a frame. I had ridden to a friend’s house about 10 miles on my new bikes maiden voyage. While standing there the rear tire just blew (this was a bit embarrassing). After checking the rim and tire, I figured I had just gotten a bad tube and put in my spare. I got home and it blew again. After checking both blown tubes I discovered that the holes were in the same location and on the rim side of the tube. The plastic rim tape, which came in a continuous loop that you stretched over the rim, was indented at every spoke eyelet on the inner wall of the rim (Mavic MA-40s). This actually split the rim tape and pinched the tube and KABOOM. I threw out the plastic tape and only use the cloth stuff that sticks to the rim. This was a road bike using 120 PSI. The plastic stuff might have worked better with a lower pressure.