Don't know if this is odd, or just my own ignorance. I hadn't ridden a bike for several years all during high school or college. When I went to grad school, I got a ten speed bike in 1972. The tire was low, so I went to a gas station and used their pump. I was not using a tire gauge and heard a loud explosion. Looked across the street to see what had happened and then realized I had over filled my tire and it was the cause of the explosion! LOL