Kevin, I'm not sure how many miles you've got on her now, but those tires were brand new when I bought that truck at 44K miles or so - pretty sure Carmax put them on. So, I figure they lasted at least 50K or thereabouts just when I had it, plus however many miles you've put on them. Under my ownership, they were always great in the rain, a little noisy in the dry, and always stayed in balance well. Wear, from what I remember, was pretty even. You might consider getting another set of those. I'm pretty sure Oscar told me they're simply rebranded Goodyears of some sort.
My Suburban, which I bought from GH Sharp, came with Michelin LTXs on it (of course) and they were great. I ended up replacing them with Pirelli Scorpion STs, which I quite liked - but I sold that truck too soon to be able to offer you any useful data on wear rates.
Otherwise, the Michelin LTX is the tire to have on those trucks. They wear like iron, ride like a dream and are great in the rain. Bowie and Nicholson both swear by them on their 250s. Pretty sure Matt Graham has them on his Excursion too.
Go ahead and throw down on the Michelins. That truck's worth it
--Karl, who still misses it
