You know what?
It's probably a cosmic thing, but...
I run my tires at 50 PSI, and I don't care what happens, and...
Nothing ever happens! They wear like iron, and I get great FE!
When I used to worry about stuff like that, I had all sorts of tire problems - premature wear, out-of-round tires, thread separation, flats...
My suggestion is to run 50 PSI regardless, and quit worrying!