A couple weeks ago I went from the stock Toyota wheels/tires 265/65/17 to Nitto Terra Grapplers and XD Hoss 285/60/18. My gas mileage has decreased tremendously. A full tank used to average 310-320 miles driving a steady 80 mph. Now I'm lucky if I get 260 miles to a full tank driving at 70 mph.
I love the look and handling of the new wheels, but I need to know if there is anything I can do to bump up my gas mileage again? Other than going back to stock.