An unofficial answer to a question in the official forum about an official ruling in a different official forum…
I think that answer still stands. Tires can be changed during an event.
** if your team is planning to change tires (or anything), I would encourage them to make the inspectors aware. Some Event Partners may have a different understanding of the rules, and you are playing by THEIR rules.
These rulings don’t usually change, but sometimes they evolve, based on different games. ex: The size limits have changed almost every year in IQ.
Steve