Originally Posted by
martl
About the "label at valve stem" thing i don't know; possibly came with clinchers becoming more popular. Bike mechanics love those tiny details, which have no effect on the way the bike actually rides, but show it has been built with the utmost attention to detail.
For me, it just makes it easier to track down the cause of a puncture, tho' to be honest the tire doesn't move much on the rim when I remove the tube (and I almost never remove the tire from the rim when changing a flat), so that "fixed" reference point is of debatable utility.
SP
Bend, OR