Depends on what you carry or tow. 235-85s are all I feel comfortable with.. No rubbing on the inside. Some use Spacers to mount wider tires. I don't like Spacers.
I Have a set of Goodyear GS647 SS's (replacement for the G-159) on, They have a 10.5" tread width.. Look good on a DRW.. if the "Look" is what yer after, as well as a dam good tire.