1991 Silverado K1500

It looks like this:





Then this happened:





Bought these tires used for $75 and they lasted 6 months. Woooo.

Mostly the truck is driven on roads, it's used to tow once or twice a year, and it goes offroad probably once every two months. (I got it stuck twice on those POS Steeltex).

So, wondering if anyone has either a recommendation for a decent, cheaper tire that would work well for me, or a source for used tires that will work for me.

Size: Those are 265/75/16. Looking at 265/75/16, 285/75/16, or 33x12.5x16 or similar.