RT21KRH
Well-known member
Frame rails provide load carrying / towing at lower price point for a long wheelbase truck. Easier to manufacture than unibody. An F-150 super crew with 8 foot bed is lots of unibody stamping! Also the rails provide high longitudinal stiffness and that’s what you need in a truck… loaded towing straight down the highway. Torsional stiffness is poor with the frame rails as you mention.The Lightning's body-on-frame construction is a differentiator from the competition, but I don't understand the bias against modern unibody construction in the half-ton truck segment. It's comical to hear Chevy and GMC talk around the fact that the Hummer and Silverado EV are essentially unibody trucks.
You get better structural rigidity and efficiency with unibody construction and the R1T proves that you can have amazing off-road abilities and almost best-in-class towing capabilities with unibody construction.
Is there something I'm missing or is it just an example of truck buyers being irrationally conservative? It reminds me of the ruckus that happened when the F150 went with aluminum body and truck bed construction.
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