Thanks, Pianotuna, good reply. It brings up a thought. Why not just change the gearing in the rear dif?
Larger tires are less efficient, but the drop in rpm overcomes this, but keeping small tires and changing the gearing will drop the rpm and keep the tires small…
I actually want larger tires to "look" better also, so may stick with tire changes. Ground clearance is a plus.
I have had oversize tires on my truck before and the mileage dropped off considerably, but that engine was having to work.
Interesting about the 215/85-16. I have heard that more narrow tires are more efficient than wide tires, so even a large diameter tire that is narrow will be better than a wide tire of smaller diameter. Any experience anyone?