[EricH]

Q&A posted an answer on this very topic.

Q231 Q. If our wheels extend past our current frame by .08", do they count as the new frame perimeter and thus increase our overall perimeter size?

A. Yes, the Frame Perimeter is determined by the string method highlighted in the blue box in R2.

I suggest someone ask Q&A how the "non-articulated" part of the definition would affect that ruling, as soon as possible. (Or: Q&A just failed a test on the rules they wrote.)