What would cause this tire wear?

[tip]

I just got new tires for my K3500, and want to make damn sure they don't end up looking like the ones that came on it:





HUGE cups on both sides and lots of outside wear as you can see. I'm planning on doing king pins here shortly, plus an alignment. Just want to make sure there's nothing else I should do. The rear tires have the same amount of miles and look like 80% tread is left...