Originally Posted by
Andy_K
This was my reference:
Stan's Alpine rim:
Stan's lists the ISO size as 559x20 for this rim.
What I see much more often is something like this (Velocity A23 in this case):
Velocity lists the rim "width" (no qualifier) as 23mm.
I have noticed this exact same thing while trying to look at Rims. Its very frustrating to know what you will get. I wish manufacturers were more clear on this and gave both dimensions.