30X9.50 fills the wheel wells nicely with a little concern about rubbing. If in doubt just use some AT 235X75X15 tires. They really beef up the appearance, fill the wheel wells nicely and you have no lift issues. Save your money for gas and enjoy your truck. The 3.0 gets crappy enough gas mileage as it is without heavier tires that probably will serve no real useful purpose other than stroking your ego...and 4WD guys will know what you're doing.
But, on the other hand, it IS your truck and your money so go for it if you want to.
Last edited by momule; 03-09-2014 at 11:37 PM.