60 runs?! With the crate motor, I ran my 30x9 M/T Radials 115 runs (which means they were done at 110-112)

Been 1.40 60' on cords. I usually ran 18psi in them. Ran 21 in them part of one season, but found they weren't consistent there. While you can run radials super hard, that doesn't mean you HAVE to. Find what works for your car and combo. I even bracket raced full-time on the radials.