Rear Gear Ratio?

[mopar346]

Man you guys think different than me, a truck needs a low gear and the bigger the tire the lower the gear. By the way a high numeric gear is referred to as low and low numeric gear is referred to as high. 4.56 is a low gear, 3.08 is a high gear. To move the mass of a truck you need leverage from a low gear, as you increase your tire size you make your final drive gear higher, 35s with 56s runs out the same as 29s with 3.55s.

Here is a chart that will give you info on your RPM 1800-2200 or so is the sweet spot for mileage.