Ratio

then don't drive it.

Seriously the engine size also matters.

 

2.28 ratio with 22.5 low pro tires. Volvo 13 speed auto, run rpms 900 to 1200.

 

Was a 2011 designed to be downsped that much?

 

so lower the gear the lower rpm and better fuel miles

 

You need to do some research on the specs for the Volvo engine in 2011. Find out the torque curve and the operating range where the rpm’s should be.

 

Why are those your only options?
The right truck for you is out there. Do the research.