Tall Rubber vs Low Profile

I was wondering if any of you had any experience or knowledge that you could pass on to me regarding the pros and cons of having more or less sidewall.

I have several older trucks that are running on older steel rims that I would like to change over to aluminum or another alloy type of rim to save on overall weight and fuel mileage. I have been wondering if I would be better off running low pro tires or tall rubber for several applications ranging from a dump truck to highway trucks running flatbeds and drop decks.

I have always preferred a tall rim and a tall sidewall for the off-road benefits that I perceive them to have despite the fact that the majority of my work is highway. My dad has always preferred a low profile tire.

Has anyone switched from one to the other and noticed any difference on fuel mileage, tire life, brake life, turning radius or limitations, or performance on and off road? Any other changes you can think of that I have not addressed please feel free to address.

 

My biggest question was if the higher RPM caused by a change in diameter would be offset by a change in rolling resistance. I think the answer is to keep 24.5s with high rubber on my off road trucks and to go up from 22.5 to 24.5 and use low profile tires for my highway trucks in the future. Thank you for the help.