I have a GQ Patrol with 4.2 TB42E engine with 265/70/R16 tires on 8 inch rims.
The driving I mostly do is open road with a little dirt track activity on farms.

I would like to know from someone who knows the real skinny on tires.

What is the correct size tire for the best fuel efficiency. I have heard that the wider the tire the more energy it takes to move it.
I have also heard that if your tire is too tall then you use up fuel to overcome the oversize rolling diameter.

What size size should I get? Skinny tall 235/85R16? Wide tall 255/85R16?
Or maybe I will have to get different size rims.

I just need the correct advice.

Thanks

Neil