[onewhippedpuppy]

Ummm, tires don't just burst into flames. In extreme circumstances, such as "high energy" braking (fast and heavy emergency braking) they can overheat until the fuse plugs blow from high heat and automatically deflate the tires. The blown tires at times will then ignite, because the airplane is essentially skidding on a deflated tire. This would obviously be a landing accident, not one on takeoff. Anything that could ignite the front tire on takeoff would be major enough (locked front brake) that the crew would have known.