Google Books is wonderful but 😮 😮 …I think I discovered the English language barrier
Searching for motorcycle + “centRE of gravity” and “centER of gravity” or “CoG” yields in completely different results, but either way the consensus is;
CoG is used predominantly when relating to balance and CoM when related to wind drag or mass inertia. Since we are only talking Slow stuff here, CoG is the predominant factor and correct term. Most of the motorcycle physics books I searched today refer to ‘the motorcycles’ CoG changing with the rider position, including lowering the bikes CoG by lowering the seat, and lol I’m pretty sure they are talking about the contact patch of your butt here and not the fabric and foam !
My trick monkey brain says it is logical that if I lower my weight all the way down to the pegs ( which are way below the motorcycles independent CoG ) and seeing as we are also upright relative to gravity here, I believe I could prove that weighting the pegs does lower the motorcycle CoG.
Disclaimer: Since I am always at one with my bike, and I assume that you are also when I refer to ‘your’ within the context of motorcycle riding, the ‘your’ is the bike and the ‘bike’ is you. ( ponder that Boolean