These guys have it right. 3.21 is the std. axle ratio for Rams, but when you chose options, such as ‘upgrading’ the engine you get 3.55 as std.
I’m still debating myself, at first I wanted 3.92s, but and now leaning towards 3.55s. I plan on running 17” LT-34”s with a mild leveling type lift (1” in back, ~2+” in front),however don't want to wreck my fuel mileage too much. (The stock 20’s are ~33.6”)
I feel like If I were lifting ~4”+ or going with ~35”+ tires I’d want the 3.92s. Sometimes I tow light, and haul some mild loads, but who knows what the future will bring. With these Rams even a mild load is a ‘heavy load’, as they don’t have much payload capacity, lol. I don’t want it to be downshifting all the time for hills, but don’t want too high of RPMs when running highway speeds on level ground. I wish I could rent one of these things for a weekend!!
I’m still debating myself, at first I wanted 3.92s, but and now leaning towards 3.55s. I plan on running 17” LT-34”s with a mild leveling type lift (1” in back, ~2+” in front),however don't want to wreck my fuel mileage too much. (The stock 20’s are ~33.6”)
I feel like If I were lifting ~4”+ or going with ~35”+ tires I’d want the 3.92s. Sometimes I tow light, and haul some mild loads, but who knows what the future will bring. With these Rams even a mild load is a ‘heavy load’, as they don’t have much payload capacity, lol. I don’t want it to be downshifting all the time for hills, but don’t want too high of RPMs when running highway speeds on level ground. I wish I could rent one of these things for a weekend!!
I'm putting air bags and LT tires on mine, I don't like a truck to squat with a load in the back, even the max rated load would squat too much for me.
