My guess is that the coined area was meant to act as a way of keeping the face area of the wheel from making full contact. That would help with the problem of the wheels rusting on the face area. I don't know this to be the case but it seems logical to me.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain