I bought them from the site that's attached to that forum. I don't know the exact offset but I believe it's the same or very close to OEM. The tire size is 25 but when I got them, they were standing 26.5" tall. I would get a very minor rub but only under extreme conditions (e.g. going down a hill with a loaded RTV and give it a full turn to make a corner in the trail that traverses the hill. I would get a minor rub on the front outside tire). I put a lift kit in but in retrospect, probably shouldn't have.