Rivian is calling the R1T a mid size pickup as its 136 inch wheelbase sits somewhere between a single and double cab version of the Tacoma. Its slightly smaller than that of the Ford F150 coming in at 5.4 meters long and 2.1 meters wide. These dimensions should give it better articulation when off-roading, as well as making it a more manageable vehicle to drive within the city.
While the off road credibility of the R1T looks great, alike the F150 few of them will ever see a trail. There is a big demand for more mid sized trucks however, and even the new Ranger is a bit larger than many were hoping.