Ram 2500 Gearing

Can you check the rear end to ensure it is in fact the 4.10? Seems odd that it couldn't pull that unless something was off or you're a lot heavier that you think.

Pretty sure they are 4.10 but going to the dealer again to verify. The trailer was scaled at 7600lbs (8k GVWR)

Mine does that too but I have 3.73 gears. I would think 4.10 would get it done. What size tires are you running?

Stock tires. Beginning to think I was quoted the wrong axle ratio.

Is it the same trailer for both the Tundra and the RAM?

If you were pulling a 6500lb trailer with the Tundra and a 10,000lb trailer with the RAM, it's not a fair comparison.

The HP output of the two engines is comparable, but the RAM is heavier, geared differently in the transmission, and has a shorter axle ratio. What you bought was mostly the additional payload capacity and suspension rigidity in the RAM.

Exact same trailer and weight. The only difference, as mentioned, is the Ram is about 800lbs heavier curb weight and the rear axle ratio.

You're exactly correct, I bought the Ram for the extra payload and heavier suspension with the expectation of a better towing experience. What I didn't expect was that I was happier towing with the Tundra.

Mine will do 40 mph in 1st gear with stock tires and 4.10 axles at 5000 RPM+. I think something is off with your figures.

Numbers might be off a bit, I wasn't concentrating on the Dash. It would accelerate to near 40mph in 1st around 5500rpm but drop to 25mph in 2nd around 2500rpm. It would hold there but was bogged down and would not accelerate. 1st gear at 5k was probably closer to 30-35mph.