Ok, you would know I would find some info on this right after I posted the question. I've found that the following has 10" within their Rim Width Range:
285x60x18 (31.4x11.2x18) Rim Range Width = 8-10 inches
285x65x18 (32.5x11.2x18) Rim Range Width = 8-10 inches
285x55x18 (30.3x11.2x18) Rim Range Width = 8.5-10 inches
This answers part of my own question, but if I did go with the 285x60x18 on a 10 inch rim, since the section width is 11.2", do you think this would rub on stock 2wd?