I have a new JKUR ordered and I am getting ready to do upgrades. I plan on putting a 35 inch tires and a 2.5 lift on it. So my question is on a Rubicon (which has better springs than a Sport). Is it better to do a new spring lift or put 2.5 spacers on my springs? And at what point will I lose the ability to use the auto sway bar disconnect? I want the best off road parts without losing the convenience of auto disconnects).
There is a gent on here by the handle of Mojeaux that went the spacer route on his two door Rubi...from what I can tell, he's pleased.
I went with new springs and shocks on my four door Rubi because I wanted to upgrade both components in a way that would improve my suspension's performance. Sure, a spacer lift or a fender chop...or both will let you clear bigger tires. I wanted something that would handle additional weight, give me slightly better articulation and the ability to customize the handling dynamics.
It is a myth that Rubicons have "better springs" than a Sport. The springs may be stiffer, or may not. 4 doors generally have stiffer springs than 2 doors, but beyond that it is very difficult to discern any sort of reliable pattern.
In any event, it's always better to get better springs. Budget boosts are great, but having quality springs that are actually the proper length is the way to go.
2010 JKU "Mountain" Edition
TeraFlex 2.5" Coil Lift : Old Man Emu Nitrocharger Shocks : 33x12.5R15 Goodyear DuraTracs : 15x8 Black Rock 909s : Other Stuff . . .
If you looking to gain anything from a lift besides height, it is always better to do a coil lift. The stock springs, Rubicon or not, is really not designed to take all the added weight of aftermarket parts.
I've been looking at the AEV dualsport xt 2.5" lift for my JKUR. Also, I would like to go with 35's and I know I am going to need new wheels so that I do not need to use spacers (I don't want to use spacers). Will I need new gearing as well? I have the 4.10 automatic gearing. If I need new gearing I might would just stay with 33's and just go wide like 12.50's. SO MANY OPTIONS! I'm overwhelmed and I just want to make the right decisions.
When we added the LoD bumper and winch there was some nose diving. Rubicon may have some upgrades but agree with the above posts about "upgrade" of suspension. Put in a 2.5" AEV lift and am very happy with ride. Definitely an improvement from stock and no more rake or nose diving when stopping. I don't have the pentastar but have had few issues with my '11 and 4.10 auto with larger tires (except the drop in gas mileage). Only real issue has been the hot oil light when running 4-high. Good looking Jeep btw.
If you're in a hurry to get there, you're not enjoying your Jeep enough.