For the tires, 30X10X15 have been reported to not rub on an X, anything bigger "can" rub.
Try to avoid 14" wheels, they can rub on the control arms depending on the profile of the wheel.
For offsets, you have a few choices.
- 6+1 all the way around and 1.5" spacers in the rear. Overall ~1.5" wider than stock.
- 5+2 all the way around and 1.5" spacers in the rear. Overall ~3" wider than stock.
- 6+1 up front and 4+3 in the rear. Overall 2" wider than stock and slightly wider in the rear
- 5+2 up front and 4+3 in the rear. Overall 3" wider than stock and slightly wider in the front.