Michelin Load & Inflation Tables

[DonB]

I put the 2007, 2010, and 2013 8.25-inch tables in an earlier post in this thread. I noted that the early table called for 13.2 inches, and then they changed it to 13.5 inches while adding a 75PSI column. Pure conjecture that the two moves are related, and higher pressures decrease the separation requirements.

Over the years Alcoa has made a great many variants of the 8.25-inch wheel, so I'm not going to assume that they all have the same outset. Certainly they have changed other aspects of the wheel - for example the wheels used to have valve in the center of the flat area, and then they moved it to the inner curve. They have also steadily increased the maximum load rating on that wheel size.