I had a F-150 and looked at the 2015 and 2016 Tundra to upgrade for towing. They had more hp but no improved towing or hauling rating from the factory engineers.
I did some additional research to form my own opinion regarding the "spin" that the Tundra salesperson gave me about capability being beyond 1/2 ton performance.
One discovery was about gearing and the low axle ratio he bragged about. It is the impact of transmission ratios on final drive ratio the Toyota does bother to explain. Smoke and mirrors.
Tundra Gears ratio's (cut and paste from Edmunds.com)
Transmission ratios (x:1)
I = 3.33; II = 1.96; III = 1.35; IV = 1.00; V = 0.73; VI = 0.59
Final-drive ratio (x:1) 4.30
F-250 ratios from Ford website (cut and paste)
Gear Ratios (to :1)
1st 3.97
2nd 2.31
3rd 1.51
4th 1.14
5th 0.85
6th 0.67
Reverse 3.12
The Tundra 1st gear is some 15% taller than the F-250.
The tundra 6th gear is some 12% or so taller than the F-250.
The Tundra axle is some 13% or so lower than the F-250.
In practicality, the final ratios in each are at basic parity.
Just sayin,
Marv
