I have had only one tire blow out. I was riding the bike at the time, It was the front tire and I was riding at a pretty good clip, 19 mph or so.I was very fortunate to not crash and get safely stopped in the emergency lane. This happened on a 2 lane bridge. This was back in the early 80's. I was riding a set of new Michelin 19mm tires. I hit an expansion joint and the tire blew. That was the last time I purchased or used such skinny tires.