Mike, I had used a Stop'n'Go plug on my 1st PR3 the morning before I left for Spearfish on my BBG (1500 miles in 24 hrs) last summer. The BBG didn't pan out due to bad planning and execution, but the tire got me to Spearfish. The next day we went looking for a tire for Rick's bike and after not finding one, stopped for brunch. When we came out my plugged tire was flat. We tried to replug it and couldn't stop the leak. We then tried using gummy worms and that didn't work either, so I had to buy a new tire, which required being towed to Rapid City. If we could have stopped the leak, I probably would have kept riding that PR3. It had lots of tread still on it. The Roadsmart 2 I bought in Rapid was squared off pretty badly when I replaced it a couple of months ago.