Michelin Defender LTX M/S - I just put on a set (10 ply & Load Range E) maybe a month ago and what a huge improvement in rain traction and all around drivability, plus at least 1mpg improvement over the previous set of tires. Great highway tires with no noise, and strong as heck.
A big bonus was the incredibly minimal weight it took to balance them out on the road force balancer. The most weight was 2.25oz on one tire, and the other three were 0.75oz, 1.75oz, 1.5oz per tire.
I was running BFG KO2's (10 ply & Load Rang E) before, and while I do miss the more aggressive look, I don't miss the poorer fuel mileage and the issues I was having with balancing.
I got them balanced three times on a road force balancer this season alone (third season on them, and they still had the nibbly bits, so excessive wear was not an issue) and the least amount of weight was 7.75oz, one was 9.5oz, one was 10.25oz and the last was 10.5oz.
I keep my tires at 40psi cold (door says 39psi front and rear) and I am extremely overboard on my tire pressures (checked and adjusted at least monthly), and I get an alignment yearly, too.
My tires always have even wear across the entire surface with no feathering, scalloping, and no center wear out.
It seemed that the more aged the BFG's got the more weight they took. It was also verified that my rims are true with no wobbles or hops, and that the BFG's had no belt shifting or hopping either.
So I'm unsure as to why they got the way they did. All I can speculate on is that the rubber aged and caused issues. I also stored them in a climate controlled area and stacked them properly over the winter so as to not get flat spotting either.