Re: was GTS rebuild now Custom Rims

[RSRBOB]

The "BOW" in the center of the rim is called a drop center. Its purpose is to
ease installation and removal of the tire. After the bead is broken down on
the tire, the bead of the tire is held in the center of the rim, which is
smaller in diameter because of the "bow" and allows the opposite side of the
tire to be more easilly levered over the rim. Any of you who have had trouble
changing tires before should try getting both beads into the center of the
rim before levering.
RSRBOB