Sheeeeesh. Here is a head scratcher.

I took the wheels off yet again (probably the 12th time) to check the center rings (I seem to have bigger biceps because of all the heavy lifting, jacking the truck (no pun) than when I was single and lonely) and even though the center rings did not have any AFS marking on them, I found a little white stickie that says "74.1mm/72.56mm". What does this mean? Do I have the wrong center ring? Why the two numbers? the center rings seem to be in not so good shape so I have taken them off. Are aluminum ones better than the plastic ones?

thanks all. I guess I am getting close to solving the mystery ( i hope)

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Another lame attempt to get to 2000 posts
M i C k E Y

2017 Tesla Model X
2014 Porsche Panamera-S e-Hybrid (sold)
2012 Porsche Cayenne
2001 X5 3.0 (sold)
2003 Carrera 911 Cabrio (sold)