Originally posted by BicuspiD Thanks Jim! IS this a worldwide spec , or foreign only. I havent seen it referred to on any of the HREs or Kinesis we have gotten, nor the other US based wheels..
You'll probably only find the flange codes on imported cast and forged wheels, but I can't verify that. Also, it's often included in their wheel sizing information, as shown on the boxes my Volk TE37s came in...
Kinesis, HRE, Fikse and other CNC/machined wheel manufacturers probably wouldn't have this information on their wheels, especially since most of them machine wheel centers to combine with pre-formed "hoops" (which include the flanges, obviously), and many don't manufacture those hoops themselves. I didn't think to check my Kinesis wheels when I had them because obviously it wasn't that important. Maybe someone who has a set of this type of wheel can comment.
Considering that many of the major manufacturers of P-Metric tires are domestic, I would assume that it is a worldwide "spec", but that domestic wheels don't include this information unless they're manufactured outside the United States.