I was doing a hilly ride today. I came down out of the hills at 35 mph and stopped at a stop sign in the downtown Oakland Broadway. I came to a stop light and waited. A couple of other guys caught up with me. As I pull off on the green I accelerated up to perhaps 12 mph and that damned tubeless tire blew completely off the rim. It had about 90 psi at the beginning of the ride so it wasn't too high nor too low pressure.

I hit pretty hard but with so many clothes on because of the cold, I got relatively light injuries though it's a damn good thing that I had out-accelerated the cars and they saw it happen and had time to swerve out of the way as I landed almost in the middle of the street. The other two cyclist helped me up. After a couple of minutes I installed a tube and inflated it and rode home.

So I am now off of tubeless tires with actual proof that they aren't safe.

BTW, I fell on my side and slapped the helmet on the ground and it is broken.