For the haters out there, when you're lucky to get 16-17mpg having a non-aggressive tire makes complete sense. I have a LTD with 20's and TOYO street tires because I refuse to take lose any more mileage with heavier/aggressive tires.
And let's be honest.....the 4Runner isn't a off-road monster. The tires he has mounted are MORE then ADEQUATE to handle most terrains our 4Runner's will encounter. Now on my 79 CJ5 that's a different story, it's rocking 35x14.5x17 Toyo MT's which is suiting considering it's a Jeep and is meant for more hard-core off-roading.