I had marks on my tires (changed tires and haven't gotten around to
replacing the marks) on my PA32. I marked the tires with 1 dot at the
valve stem if it is at 12 oclock, 2 dots at 3 oclock, 3 dots at 6 oclock
and 4 dots at 9 oclock so that I could always tell where the stem was
relative to the ground before I moved the airplane (at least one set of
marks is always visible below the fairing). From that I know about how
far and which way I need to push the airplane to get the valve stem at
the bottom without having to watch the wheel as I push. I just used a
yellow paint my A&P had in the shop. the tire marker sounds like a
better choice.