Finally pulled the trigger on some new rubber for my '10 Jeep. I kept my stock "Fred Flintstone" wheels for now. Original tires were 225/55/16. I may be wrong on the 55 part. I went with 285/75/16 Duratracs.
These tires make a real improvement over the stock go-cart tires! They are super quite, they handle almost as good as stock (only difference is I can tell there is lots more rubber under me, the ride is unchanged) and make the Jeep look like it should have when I bought it!!
I have not tried them off-road yet, but in the rain they are excellent! I've purposely hit standing water just to test them. These tires fill the wheel well up nicely. I have a slight rub on the left sway bar at full, hard right turn. Very minor. I believe this is from the sidewall tread on the Duratracs. So here's some pics:
Before tires. Stone stock.
Stock tire and wheel next to new Duratrac on stock wheel
285's do not stick out from fenders on stock wheels