I put worn down 265/65/18 (same as 265/70/17) Dueler A/Ts on my '06 sport before the lift and they rubbed at full lock. I just got Duratracs installed and they are MUCH meatier then the Duelers and I would be surprised if they didn't rub at least a little bit. You can get away with them if you don't mind getting spacers and trimming a bit before the lift. Also figure out how much your suspension is sagging, that might be why there are so many mixed replies on this topic.
I agree with Darkie3495, I'd be worried about rubbing the stock UCA with that size and no spacers. Rubbing on the mud flaps at full lock is one thing, rubbing the UCA is a different ball park. :sobbing: