I have a 04 fx4 with 18" wheels, im wanting to put a 2 1/2' leveling kit on the front can i run 35x12.50 nitto on that setup ?

 

If they are mud grapplers you may some rubbing on the control arms when turning. 35x12.5 all terrains will give you more room.

 

yes they'll fit, you might have a little rubbing with the steering wheel at full lock. if you're talking about mud grapplers you'll need 1/4'' wheel spacers to go on the front to keep the side lugs from rubbing the upper balljoints.