I wish I could be the first, but I'm fairly confident I'm going with 245/70s! A test fit would be your best option. I did get into contact with a guy that has 245/75r17 Goodyear Authorities on 2 inch BB and he said when he wasn't running spacers, it rubbed a bit on the sway bar. I bet you could fit them without much trouble at stock height, but I just want to get the new tires and be done with it!