Another JL with swaying on highway speed with lift

parkhs0316

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I have 2021 Jeep RUBICON UNLIMITED

I have following mods

- 2.5 inch stage 3 ICON lift with track bar and lower control arm (front)
- 37" YOKO Geolander 37/12.5/17
- Teraflex Falkon adjustable Steering Stabilizer

- Just got done alignment and moved axle front and rear to center
- 35 psi pressure

and jeep drives pretty well under 50mph and as soon as you hit around 60mph, jeep sways left and right and every time I try to correct the steering, the say gets larger so I have to hit the brake to slow down

I have 2021 so I should have updated steering box and now I am scared to driver 60mph and up.

any suggestion? I will try out 30psi today and see, but I am not sure if it will be fixed

thank you!!





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jludave

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35 psi is likely too high for those tires.

Are the tires balanced properly?
 

Moto_21

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To be honest i think its icons springs, my cousin had same lift and his would sway so much compared to mine. And possibly the way they valve thier shocks , could allow too much movement, it does good offroad though ill say that.
 
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parkhs0316

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: ( somehow, I have been reading great review about ICON, but I have noticed it is also too firm. it bounces alot through rough road
 

Zandcwhite

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What is your front caster set at? I find 6.5-7⁰ handles the best on our jlu with 2.5" lift and Yokohama geolander X-mt's. 28 psi cold, creeps up to about 31 on long stints of freeway driving handles better and really smooths out the ride too. Your firm ride is more tire pressure than springs in my opinion.
 

Moto_21

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: ( somehow, I have been reading great review about ICON, but I have noticed it is also too firm. it bounces alot through rough road
The digressive valving design of icon shocks tends to make it more firm initially
 

Moto_21

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Tire pressure is probably the best call like stated above, if you go down to 15 psi and its still too hard, its the shocks or springs
 
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parkhs0316

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and swaying on the highway is nothing we can do?
 

Moto_21

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I liked the sway the shocks felt on my cousins rig, but thats just me, the springs were less than desirable, we kept having issues with them shifting around too much and spinning the passenger side top spacer for the hydros loose
 

Moto_21

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and swaying on the highway is nothing we can do?
Is the swaying a steering issue? Is it tracking straight? Or is it the body swaying when making a turn? More caster will not fix the latter, only help with keeping a straight line
 

Moto_21

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Stiffer rear swaybar like a hellwig could potentially help allevite the body sway a bit
 
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parkhs0316

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its sterring issue not tracking straight and once it start to sway.. it get worse and worse as speed up so I had to keep correct it

it is actually worse with steering stabilizer set firm
 

Moto_21

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its sterring issue not tracking straight and once it start to sway.. it get worse and worse as speed up so I had to keep correct it

it is actually worse with steering stabilizer set firm
Yeah more caster then like he said. Also set stabilizer on softest setting, or like 7 clicks in from full soft maybe
 

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