Side note: tractor tire inner tubes make great trampolines. My aunt and uncle run a small farm (one farm over from the farmhouse where my mom was born) and gave us a tractor tire inner tube when I was young, and we jumped on it enough to require several patches throughout the years.
In contrast, my bicycle tires at are 130psi, and while loud, the explosion is minor. I think the amount of air/water/matter escaping is part of the equation, but someone more physics-inclined could probably ascertain to a better degree how this affects the outcome.
Road bike tires go up to 150 or so... but that doesn't really matter, what matters is that the surface here is massive and you need to withstand all of the force evenly or it will go. Even one crack would do it, it's not going to just seep out water but explode along the fracture, much like a popped balloon isn't going to gracefully deflate.