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I'm sorry, but your charts just aren't convincing me; quite the opposite. Firstly, your infated pressure vs. predicted wear chart tops out 4 psi below your COLD recommended reading and seems to be trending towards a decline after 40psi. Your tires are probably running 49-51psi hot which is way off the charts (they did not specify cold pressure, so I can only assume that it was tested pressure). Your charts are comparing proper to under-inflation, not proper to over-inflation. You can not infer that the trend continues forever else we'd all use 5,000psi tires, or better yet, steel hoops.
Secondly the shoulder-crown wear index chart does show some trending towards wearing down the middle up to 40psi, which again is 9-11psi short of the hot pressures you are running.
The charts for braking power vs. psi show a flat trend. I can tell you from personal experience that this is not true. Also from the combined and accepted experience of many years of many racers in many types of cars with many types of tires.
Anecdotal evidence: I accidentally did not set my tire pressures after the "tire guy" mounted and balanced them. The mounting put the pressures around 50-55 psi on each tire. At the end of the day, 1" rubber on each side of my tire was still clean! It had not yet touched the road that day. You can't tell me that if i continued to drive like that, the shoulders (which don't touch the road) would wear at the same rate as the crown(which is supporting the whole load of the car).
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