Only if one limits the possibility to Tyres rubbing each other. Per the diagram from jcjeant, if the bearings were free to drift toward the center, a wobble is possible, and tyres would not track correctly on this truck. It has been a long while since I viewed the takeoff video, but I remember "seeing" the Fire start at the Wheels, not aft the Wheels.
If she had lost stability in this MLG, all manner of stress would impinge on the tyres, and the metal. A Tyre Fire is reasonable, Titanium road hazard is also possible, but slower to eventuate, and less of a trigger. Occam says Tyre Fire.
bear
Last edited by bearfoil; 13th Dec 2010 at 00:11.