I went to get my bike this morning, only to find the front tire had literally come off the rim on one side. Underneath it you can see tattered pieces of the inner tube.

I'm assuming that the inner tube was the one that was faulty rather than the tire? the tire was installed last year around this time. The inner tube, which was installed at the same time, never worked properly - I can let air out, but I had a heck of a hard time getting air in. I would have to jiggle the metal bit, and even doing that most of the time I couldn't get air to go in.

I inflated it on Monday, to 80psi, which is the normal pressure I put in for my tires.

I guess this post is both asking why it happened, and also to confirm that it's the inner tube and not an issue with the tire itself (I only did a very cursory check before having to rush to the garage to get my car to work).