My buddy bought a King Quad 700 and wants to know what the best tire is. The terrain is a mix of everything you mentioned, but we tend to be in the mud more often. He was looking into 589's, but had heard they're heavy and ride like a tractor. He needs every bit of help to try to get an edge on the Honda's.There have been a couple articles in some magazines, but Sometimes those are a bit off base. I can tell you what works well down here, but we are mostly fla sandy trails w/ soupy mud for the most part. But chances are that is not what you have up there.
What type of riding do you do? Terrain? rocks, mud, water, hills? Are you lookig for more ground clearance?
That will help determine a type of tire, along w/ how much you plan on spending. Most of us have been doing this for a while, and have ran different type tires, so we can help us much as possible.