I have an '08 which also has those 17X7.5 rims. Currently running a set of 245/75s that I bought from a fellow member here who had replaced his rims. Mine came standard with the 255/75s though & I can see the difference made to the speedo by the size change! So don't forget to budget in the AEV Procal or Superchips Flashpaq to recalibrate your speedo. (That will be my excuse, anyway!
![Razz](http://www.ausjeepoffroad.com/forum/images/smiles/icon_razz.gif)
)
From looking around, you can (just) fit a 285/70 R17 on them. The specs on the sites say they fit rims from 7.5" to 9.5" wide rims.