I believe you'll find that's the same size that came stock on 2006 Sport models. I have a 2009 Sport 4WD, and it came stock with Dunlop AT20's in size P265/65R17.
i love them so far... driven in rain, (~2ft)snow, slush, and highway. great traction, low noise, comfortable, and good grip. Hope they stay that way for a while.