Currently the tyre pops only if the average surface temp of the inner, middle or outer ring, or the tyre air temp reaches > 200°C. This of course allows one of 16 sections (when locking a tyre) to go up to 999°C, as for example (60°C*15 + 999°C) / 16 = 118.7°C average temp, even though it should be completely destroyed. A shortcoming that is hopefully fixed sometime in the future.