what size rims do you have? if you have 20's then you have less sidewall to absorb impacts, you'll feel a lot more than you would with smaller rims given the same size tire.

 

Go back to Stock Ford shocks
Before swapping out my Factory Shocks driving felt more like floating in a boat : in fact it's why I named my truck ( one names their boat ) I personally like a truck I won't get sea sick in can feel it's ride without losing my fillings so I also put Bilstein 5100 front and back .

 

What Brand tire. Some brands of tire just ride like crap. As said, a 20" rim with a Thinner" tire will give you better steering response but the ride will suffer a bit. Some like the look better, not me. For tire air pressure you usually want to go with what your door sticker tells you. Mine says 35 PSI. I have an '11 Lariat Supercrew. Mine came with 275/65R18, and with the Goodyear tires. They rode really nice. But the traction was just OK. I went with a set of Cooper Discoverer AT3's in the stock size. Everything improved across the board, traction and ride included. Plus they look nice. I like them at about 34 PSI. At 35 PSI the center of the tire was wearing a bit faster. When I bought my Chrome rims I bought another set of AT3's and I run them at 34 PSI. Wear has been even.

 

A set of factory 18's with Goodyear tires will ride much nicer than 20's with Hankooks. I tried the 20's with Hankooks and took them off after 50 miles because they rode so badly. I noticed every bump, crack and tar snake in my lane so I switched back to the 18's. The tire/wheel package can make a huge difference.

 

What tire brand, model, size, and load range? In different stages, I put a leveling kit on my truck, an add a leaf, and 285/70/17 Load Range D Duratracs. The Tires were the only thing that made much of any difference in ride quality.

 

I've heard that the Ram air suspension is supposed to be the smoothest riding truck out there. I have no idea since i haven't test driven one, but my Ford 18' does ride pretty well. Still drives like a truck and that is what i was looking for. If smooth rides is your main concern, i'd check that out. Or a ridgeline, which is basically a car chassis with a bed.
If not, you got a truck, enjoy the truck ride. ;-)

 

Yup! The orange construction barrel is Michigan's new State bird.

 

While I'm not doubting your story I'm sceptical a 1 psi change in pressure is the actual cause. Filling the tank with gas or taking on a passenger would have a larger effect on tire contact patch

 

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