I'm coming from Jeep rock crawlers, so my experience would agree with your statement. I have to admit the 20s do handle well on the curving mountain roads. My brother-in-law has a nearly identical Platinum f150. He kept the 20s, but went 275/60r 20. They do look more truck like but only add a small amount to the sidewall.I think that 17s or 18s should only be on these trucks
The 20s look decent, but the small sidewall affects ride quality and offroad traction