: your chart is very interesting.... but you need to correct the ring and pinion diff ratio.
With this Toyota FWD drivetrain orientation, you don't use the rear diff ratio. This ratio is calculated to get 1:1 with the transmission ring and pinion ratio (via the t-case ratio)... whatever is the trans diff ratio! So the final drive ratio you need to use in your calculations is the transaxle diff ratio.
- U140F: 3.08
- E352F: 4.56
- E359F: 4.56
And now the magic number (for off-road and not highway haha!) is the RAV4.1 manual trans diff ratio....
- E250F: 4.93