Speaking of tires wearing out before their time.
I learned a trick to keep my A/T and M/T tires from wearing out prematurely. And I can only speak of my experiences running oversized A/T and M/T on my 76' Scout II, 89' Heep Wrangler and numerous Chevrolet 4x4 pickups and now a FJ40 with 33x12.50-15.
For on highway usage.
NOTE: NO TIRE MANUFACTURERS OR TIRE STORE WILL EVER AGREE TO THIS, BECAUSE THEY DONT WANT THE LIABILITY. ( SO DONT ASK THEM)
I rotate my tires every time I change my oil. Thats every 3-5k miles.

I also decrease or increase my tire pressure. (That's the part that people are going to have the hardest part with.)

I go as low as I feel necessary, perhaps 25 psi ( cant recall going any lower than this on my everyday driver)
And as high as 42psi ( Im running this right now in my 13 chevy 1500 4x4)
I play with the air pressure all the time in my trucks that are running A/T or M/T to keep the tread running flat. Literally "flat" like place a ruler across the top of the tire (outside of tire to inside of tire) and it will be flat. Im not talking PSI flat. Clear as mud right? If the edges are wearing too much, I put more PSI in them to run the tire in the center of the tread. Visa versa if the center is wearing too much Ill decrease the PSI to run it on the edges.

Oh and did I say I rotated them every time I changed my oil?
On my 40, which has Goodyear M/TR 33X12.50x15 with CAVIER side walls.

( ha ha Kevlar side walls) Im running probably 20 PSI. Im running them that low because any more PSI and that truck will beat your teeth out. My suspension is 2.5 inch OME lift with OME shocks. Brand new shocks, not sure how old lift is.
Overall I seem to get great mileage out of my tires.