I purchased a 2005 F150 FX4 with the Fabtech 6" lift, 2.5 Dirt Logic shocks and 35x13.50/20 ProComp Xtreme AT's. The truck rides very harsh. I let the tire pressure down and gained a little better ride quality. I called Fabtech and They said they could revalve them but no other springs were available for these shocks. Do you guys with this lift have a harsh ride? Is it better with the stock shocks? I am trying to not have to send these in because I can't have my truck down for a week. Anyone have any suggestions? THANKS..... I will try to get pics for you all.

 

How much air pressure are you running in your tires?

 

Tires were at 50psi. I let them down to 35psi. They say max 65psi on side. My coilovers have about 3/4" of threads showing at the top. Would changing that to zero threads showing help much? Minimal probably if any.

 

Your tire pressure is about as low as you can go.
Backing off the preload on the coilovers will make the initial portion of your front suspension's travel slightly softer. It would be worth a try.

 

Fabtech also said to put the stock tires and wheels on for a test drive to see if the 20" wheels are hurting the ride. BUT I don't have the stock wheels and tires. I bought this truck this way.

 

what grade tired do you have, are your shocks cranked up at all, how manymile are on the lift, have you rotated your tires latly, mine gets shaky when i dont do that

 

Has anyone had their shocks tuned? OR do you not care that the ride is bad? OR is it just my truck?