JK08MCS

You think the sway bar is binding? Really got me thinking

kbp810

Well, while I did certainly notice a softer (but also bouncier) ride with the antirock installed. I didn't install it for that purpose, and it does also sacrifice some on road handling... I did it for the off road aspect; much better feel for control off road while still retaining an adequate amount of flex.

kjeeper10

Rancho 9000 (all Rancho shocks) have a 90 day return if you don't like them. TRUST ME .. You will.
Shocks made a huge difference on my lightweight 2 door with RK 2.5's and E Tires.
I'm also running Rancho drop brackets and Synergy's Highsteer.

The 5100's sucked hard on my 2 door.

sgtkersh

I've run Rancho 9000XLs on three vehicles, a heavy Ford Excursion and three Jeeps. I've always liked them. The ride is great an do love the adjustability to dial the stiffness up when I'm packed out in my JKU or towing and dialing back when not or rock crawling. Great shocks for the money.


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MFX

I'm in the same boat as you my friend. My wife never really complained about the ride quality but now that she's pregnant, she hates riding in the jeep. In my case the bone jarring ride started (I think) after adding extra weight of bumpers and winch. I ended up swapping out the teraflex 9550 shocks for Bilsteins, no change. Funny thing is that they were so highly recommended here on the forum but not long after I got them the opinions seemed to have shifted overnight. After some measuring I found the front castor to be way off which I corrected and in turn helped some steering issues I had but didn't correct the rough ride. Next I focused on the lift. After adding all that weight, the coils sagged quite a bit so I contacted TF and they sent out some coil spacers to regain the lost inch or so. It seems the ride quality has improved somewhat but not by much. I'm seriously leaning towards trying the new triple rate coil from rock krawler to see if it helps any but I want to rule out everything else first.
You mentioned a 4" lift which is quite substantial but you didn't mention if you have adjustable control arms or just the AEV correction brackets. If you say adding weight helps matters then maybe it is poor castor alignment because as the Jeep lowers with the added weight this might be setting the axles back to where they need be. It's just a thought and a 10$ angle finder will help rule things out as a starting point. good luck

COStrider

This^

Check tire pressure. Do the research on how to chalk test them.

4wdave

Go to a progressive wound spring such as Synergy or a dual rate spring and as stated before get rid of the E rated tires. Even with E rated tires my Jeep rides pretty good with Synergy springs but I most likely will be changing them this summer to a dual rate. The torque of the Hemi jerks them around to much and along with the heavy weight of the Jeep they are just a little to loose now. The performed well when the 3.8 was still in.

cboggs

The Evo plush ride coils are just that, plush riding. I run the 4" Evo plush rides with Bilstein 5100's and couldnt be more happy with the nice and smooth controled ride. After the coils settle you will get exactly 4" of lift. I highly recommend them if your looking to replace your coils.

JeepingNet

As someone else mentioned what psi are your tires at?