265/70-17 or 265/65-17. Both are common sizes, the former may require you to crank the torsion bars slightly. This depends on the style and brand of tire.
Section width/aspect ratio-rim size --> 285/70-17how did you do the math? because all the tire calculators come out at 33.8.. i knew that sounded a bit big
You can't just say 285/75 is 33.8. Section width, aspect ratio and wheel size all factor in overall diameter for metric sizing. Assuming a 17" wheel like we're talking here, however, is correct as I'm sure you know.285/75 is 33.8.
I run BFG A/Ts on Pro comp 17x9s. 285/70r17s rub at full lock on the frame.