Well, the largest I would go on stock right height is a 265/70/16 or one right around there. That's what I have on mine and they fill out the wheel wells nicely. You should be able to get those ona 16x7 rim.
As far as the General's go, I haven't heard anything bad about them. I've heard they do pretty decent off-road until you get into the mud and harder stuff. I've also heard that they are great in the rain and snow.
You should also check out the Pathfinder ATR A/S for a decent tire at a lower price. Sorry for the bad picture but it's all I got.
