I used wired beaded tires exclusively the first few years I started riding. Then one day I had just come down a fast 1+ mile descent with a top speed around 50 mph and as I was slowing the rear tire blew out. It was so loud it sounded like a cannon going off. After getting to a safe stop and spending some time to determine the cause of the blowout, I found that the sidewall had come unwrapped from around the wire bead. The tube pushed out and of the sidewall and thus the nice loud boom.
I couldn't imagine what would have happened had the tire blow just seconds before. Or even worse had it been my front wheel. I was 40 miles from my car, 120 miles from my house and no way to fix the darn thing.
I checked the rim repeatedly to see if there were burrs or rough spots to create the problem but it was just the tire.
I just wouldn't feel safe riding on the darn things anymore. Only kevlar beads for me now.
Still get the jibbies thinking about if that tire had been on the front wheel.......