Originally Posted by
The_Joe
The rib is just the one side. Not sure what it's purpose is but it's on both rims so not a an issue as far as defects go. The eyelets do alternate. I haven't looked closely enough to try and figure out the purpose of the rib.
Rib only one side, huh, that rules out it being designed to cock the alternating eyelets. I would think it might be for positioning to drill the holes, but you said the eyelets alternate laterally, so again, doesn't make sense. Let us know if you find out.
Are those rims current production, or NOS (New Old Stock)?