wow, I really haven't been out here in a while. I drive dirt roads almost daily (although not very far, I still do). Plus a lot of the MTB trail heads in MI are accessed by dirt roads. Most of the time, they're decenty, mainly hard packed sand. But I did end up putting on a set of Nitto Grappler tires. They're as quiet as the OEM ATs, but probably twice the tread depth. So far, they've done well in what bad conditions and roads I've driven on (one pot hole last year during spring thaw had about 4 inches of water, and was deep enough that one of the rear tires lifted off of the ground). I stuck with OEM sizes, as there isn't any kind of clearance under those wheel wells (especially in the rear). I would suggest thinking about good too wild on rim offsets: the wheel bearings are designed a certain way, and you'll probably shorten the life of yours if they get too out of spec (and these are not solid axle trucks that can take more abuse)...