Absolutely no reason for tire wear...
Alright, long story short, I've had 2 sets of tires over the past 23k miles. First was a set of GT Radial Adventuro MT in 305/70r16, then a set of Kumho KL71 M/T's. Both tires have been prematurely worn by the same irregular patter. I've heard it called "scalloping" or "cupping".
I have a very mild 1.5" lift from adding JKUR springs and shocks to my 2 door sport. Other than that, no suspension mods. I have had my alignment checked, and it's always been spot on. Even checked it again today; still spot on 1/8" in. Ball joints are good, with zero play and shocks are still running great.
Tires start to smooth back out once I put them on the rear, but by the time they are say 80(ish)% smoothed out on the rear, the ones I put on the front are torn up.
My Jeep has zero shimmy, play or bouncing going on, and all of my suspension parts look to be in good working condition w/ all bolts tightened to spec.
Any clue as to what could possibly be the issue? Is this just something inherent to E rated mud tires being put on a relatively light Jeep?