265/65/17's are the same height as 245/70/17's but are 20mm wider. If you are still running your stock wheels, you may have some clearance issues on the inside with shocks and other suspension components. Also, the 265's do make the spare tire cover stick up a bit. The stock WJ wheels have close to 51mm offset and the JK wheels are 44mm so that is where the extra room comes from for the wider tires.