KartRacer25
Well-known member
Yes. My 2 cents of overthinking: From what I've read the F150, Ranger, and Transit come with the new composite springs. Mine is a 21 from Kansa City, some of the earliest Gen14 builds, with 2 leaves, one steel one composite. I think the lite weight composite leaf is great and pins are fine. I think the lack of leaves being strapped together and lack of a rear sway bar, geometry lend to them fanning if the nuts aren't torqued to spec or start to loosen from vibrations over time, thread locker etc, and axle movement, off road etc . I think in my case the pins held up, nuts got loose, but U bolts may have got some twist and fatigue, so they replaced. them. and realigned, I'm sure there's a whole team of mechanical and materials engineers at Ford that know exactly what happens. Point is, its something to keep an eye on, maintain, and there are solutions. available. If you drive on dirt washboards you can feel the rear axle move/rotate and the truck will start to turn itself. Its gets squirely, sketchy. One rear wheel goes backwards one goes forward relative to chassis. Worse case scenario, so I try to avoid this. I've done hundreds of miles of this in Death Valley, Mojave, Utah, Arizona, etc. That's probably one reason why raptor and broncos have rear coils not leaves. For me I "overland" (off road car camping), so some rough trails. Should hold up, but if happens again I may get sway bar or stabilizers, adaptive or fixed., or aftermarket springs. I think real off road folks know all about this and the solutions. It happens to jeeps too, loose nuts. Example of recent well maintained roads with long washboard sections from high Sierras. We usually roll at 5 mph or 40mp aired down on washboards. Three years of this and my F150 has been awesome and held up great., thanks again Ford.
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