Being petroleum based tires burn danged hot on top of the gas and oil already leaking out there to fuel the flames. IMHO possibly hot enough to even change the molecular structure the steel especially if it was quickly cooled with water. I have to wonder if it would be more suitable to stress fractures??
Yuck! That's a mess! I don't know what the guy is thinking; there's nothing left worth anything.:2cents: It must suck to have your tractor burn up! I wonder if it was a fuel leak or something that caused the fire, or if it burned up because of something else, like a shed?