With a 2" leveling kit (it's just a coil spacer) on your stock rims you should be able to fit a 35x12.50 with no problems. Aftermarket wheels are a different story if you go that route be prepared to unclip the fenderwell liner and move it back up against the firewall to keep it from rubbing. I think the 08s have bigger wheel wells too so I think you're in the clear running a leveler and a 35.