i just bought a set of Hx rims, so they said, i have found on the net that the Vx are 13 inch, and the Hx are 14 inch. but when i measure from edge of lip, to the edge of the other side, i get 15.25 inches? does anybody know which rims i have? thanks for you help.

 

nevermind, i just found out what was wrong, the rim size is the diamiter from the bead to the bead, not lip to lip.
http://www.autoamenity.com/FAQ/WheelSize.htm

 

Correct.

The same thing is true of the rim width.