Moremoney

Just wondering what the difference is? My truck feel super stiff hitting everybump in the road,I'd compare the ride to a dump truck. It's a 2007 FX4 supercrew wth a 2" level and 285/65/18 nitto terra grapplers and has only 130 000kms on it. That's it, otherwise bone stock and the ride was stiff before the wheels and level. Today I drove my buddies 06 supercab with
300 000 on the chassis and it drives like a cadillac compared to mine.

So what are the differences?

What can I do to soften it up? Struts and shocks? OEM or do I have to go aftermarket? My bushings appear to be in good shape. Truck is pretty mint.

John Read

If you are using a spacer to level I would start here.

https://www.f150forum.com/f4/2004-20...-guide-232015/

dbhost

The coils are different... The Rancho Quicklift Loaded has a softer spring rate...

05norcal150

I'm also interested, I love the ride of my leveled xlt 4x4...I'd love to hear if there's an official reason in different ride quality

techrep

iTrader: (1)

the spacer goes on top of the strut and coil...has nothing to do with the ride as far as stiffness..

FordSilly

In my truck a lariat, the ranchos are riding much stiffer than the Oem struts, with the adjuster set to zero. Not terrible nut noticeable.

Dirttracker18

My first question in this case is always,

What air pressure are you running in your tires?

homer

As Dirttracker18 asked, what pressure? Are these E rated tires? I run the exact same tires (Terra Grapplers), it's ROUGH! I've switched to Bilstien 5100's (although they're offroad shocks too) and no improvement. I have a 2.5" level but the truck was rough even before that.

I'm actually more convinced at this point it's the E-rated tires (in combination with air pressure of course). I haven't had a chance to throw a different set of tires on yet. My winters are also E-rated so I don't find any difference there either !

FordSilly

I run the Pirelli scorpions on Oem 20's at about 35psi

Moremoney

Yeah sorry for the reply. Truck rode rough with the stock 20's and all seasons I had before and only seemed to be even worse after switching to the fuel wheels and 18" terra grapplers.

I was running too much pressure in them, had them at 38 for towing. I have lowered them to 32 and there is a noticeable improvement. However it's still very stiff.

I was thinking of eventually switching to some KYB shocks to soften it up