Tall Rubber vs Low Profile

Aluminum over steel any time you can find it. It's like giving sneakers to a kid (Truck,) it will do well. Those steel wheels are like cement overshoes 50 pounds each to a truck.

I prefer tall wheels of a particular kind for off road work we have done here in Arkansas which are quite something with 60 degree slope on loose shale and rock at times.

I really don't care what is on strictly a highway truck PROVIDED it's dual tires on each of the positions, not super singles and never retread. Fuel mileage takes care of itself as always, I prefer having 300 gallons every 30 hours anyhow where possible. (Team) fuel = life. Mileage isnt that big of a difference between 4 miles to gallon in the 80's to maybe close to 7 back in 2001. It's still a push.

 

This is an old thread, but I will share my experience. I have a Volvo with 500hp N14, 13 speed and 3.42 rears.

Last year I decided to try 11r instead of low pro for a better ride (truck started to ride pretty stiff after we installed 3 leaf springs instead of factory 2). My RPM dropped by 125, now I have to downshift pretty often to get the engine up in the correct rpm for pulling power.
Me and my driver did a test on Monday (also Volvo with 500hp n14, 10 speed auto shift and 3.58 rears). Tires are the same brand, mine are 11r and his are low pro, about the same amount of miles on them.
Picked up identical shipments at the same time, drove over 800 miles, did not idle at night,maintained the posted speed limit (had only 3k on weight, so it was pretty easy to do), delivered to the same locations and fueled at the same truckstops. He got 8mpg and I got 7.15!

When I installed these tires, I immediately noticed a drop in mpg, but did not realize how much exactly of a difference it made. I assume 0.5mpg is due to the tires and another 0.3mpg, because of me having to downshift more often.