Little rubber donuts.

I have bad luck with tires. I'm 38 years old and have driven quite a few miles, but I think it's fair to say that five tread separation/blowout tire failures is bad luck. The first one was on my old truck, the SS RUST, in 1995. Rear tire, on the highway, the tread peeled right off the tire. I managed to pull over without much trouble. The second one was about two weeks later. Same truck, same freeway. Earlier that morning, I had two of the four tires on the truck replaced (I was poor), and asked the shop to save the two best of the old ones for the front of the truck. Not so much. A few hours later, the left front tire blew out and I hit a tree in the median while going about 60 mph. The tree stayed put.
My luck improved, until 2004. Toolin' down the 405 in my '98 Honda Civic, the left rear tire lost most of its tread, and the chunk of tread left was a big flap that beat the snot out of the car before I could get pulled over. I seem to have lost the pics of that one.

Last Saturday afternoon, I was riding in my friend Jeff's truck out to Amboy Crater for some pyrotechnic fun. We were minding our own business when the right front tire threw most of its tread, again a big flap of rubber beat up the truck before Jeff could get the truck stopped.
That's the spare tire.
And to top it off, on the way home from Amboy about 8 hours later, the truck lost another tire. Left rear, this one was a little worse.
My friend Carel was driving this time, I was lucky enough to have been in the back seat for the tumble and only got a little bruised and scratched. Carel and Jeff in the front seat made it out okay, but were a bit more beat up than I was. They ended up with a little less head room in the front seat than I did in the back.
I have bad luck with tires.