Not precisely aircraft related... and some thread drift... but here's an interesting video that shows the results of welding... even for only a very short time... on an inflated light truck/pickup tyre.
This video was produced by a rim manufacturing company that became concerned about the practice of repairing steel rim cracks, in situ, on earthmovers.
At least one welder has been known to have been fatally injured by a tyre explosion caused by welding a cracked rim whilst the tyre was still inflated.
What I find interesting is how rapidly the internal fire in the tyre propagates, once started.
You can well imagine the damage caused by a tyre explosion/fire in a wheel well.
YouTube - Tire Explosion