Originally Posted by dhillon09
I'd go for eibach lowering springs, shocks and sways. The lower your truck sits the less drag it has to deal with which should make it a bit more stable at high speeds, and the firmer springs will surely get rid some of the crazy loose feeling after hitting bumps. I sometimes feel my ass is floating when I go over rough/weird terrain lol, and I feel thats due to my stock springs and swaybars, so upgrade those if you've already gone the distance and done so much to the steering.
The above, long with the upgraded stabilizer should make a pretty decent difference
I run a 3" lift and I have no trouble changing lanes at 80+ mph....Height has only a minor role in the feel of it
It seems like he is posting from outside the USA, so "120" is probably referring to kph....so 120 would be more like 70 mph. Which sounds far more reasonable.
To the original poster....welcome to JeepGarage.
I'm pretty confident I know the answer to your problem. I had a VERY similiar problem with my lifted WJ after a trip to the dealer (I know, I know...)
They had replaced 2 tie rod ends under warranty and did an alignment afterwards. Somewhere along the lines, they must have taken out the front coils in doing the repairs, and because I have Coil Spring Spacers, its difficult to get everything seated correctly. My springs ended up not sitting properly in the lower spring perches, which made it have all sorts of weird side effects when driving down the road. MAKE SURE YOUR COILS ARE 100% SEATED CORRECTLY.
What you describe also sounds like a bit of an alignment issue. I would have a professional align it. I run a 3" lift and I run my toe specs at close to zero. The dealer was off by almost .40 degrees.