18" wheel and tire size question

[davyo]

So me thinks I have decided on a 18" wheel for my H3 (I think this the correct size that will fit 18X10 6-139.7HC-25C), Im asking because Im a total dumbass when it comes to tire and wheel sizes and bolt patterns and I also dont know the correct offset,,, I dont mind if the wheel/tires comes out a bit from the fenders.

As far as tire size, what would be a good tire size to look for in a A/T tire with a big fat meaty wide look that wont rub with no lift or t-bar cranking.

Thanks in advance for any help and bearing with my lack of knowlege when it comes to tire/wheel sizes.

Cheers
Davyo