TFL did a test with the R1T and the new Tundra to see how far both trucks could go on a single "fill up".

They towed a Colorado Teardrops classic line trailer (approx 2000 pounds) with 35 inch tires.

In the R1T they used 91% of the battery and went 153 miles (168 miles using 100% of battery)

In the Tundra the used 10.348 gallons of gas (32% of the tank) to go 153 miles (473 miles on full tank).