I want to lift my jk but i don't know if is good to lift 2.5 or 3 inch. I use a lot on freeway and streets.

 

Do you plan on running 35s? If so go with a 2.5" lift made for a 4dr this will give you the height you need to run those tires w/out having to add too much additional parts that you would on a 3" lift kit...

 

This is my jk i was thinking 2.5 lift from teraflex and the mopar fox shocks with the speedbump. The size of tires i think 33s or 35s, my jk is all oem and is slow so i don't want to put a big tires and get more slow. But with the 35' run well ?

 

33s may be doable without regearing, but if you plan on getting 35s it would be best to regear. Below is a gearing chart you can look over...The general consensus is to regear to 4.88s for manual trans and 5.13 for autos. However, some with autos have regeared to 4.88s when they do a lot of freeway driving....

 

2.5" lift would be the better choice here. Only a half inch difference, but you really don't need the extra ground clearance, especially if you plan on mostly a pavement pounder. Even with a 2.5" lift, you can fit 37s if you really want to. Just takes some trimming of the rear wheel well pinch seams.

As for gearing, if you never plan on going above 35" tires, then you should regear to 4.88's. If you have a Rubicon, then it already has 4.10s and you can probably get away with that. 4.88's will give you a little better acceleration and get you back close to the stock drive ratio with 35" tires. If you have a non-Rubicon, then you'll have either 3.21's or 3.73's, depending on whether or not you have a tow package. In either of those cases, you'd want to consider regearing your axles to 4.88's. If you only run 33" tires, though, there's really no need to regear at all.

Hope this helps.

 

I've had the same question. Glad to see all the feedback.

 

I went with the 2.5 rough country no complaints at all I drive a lot in town and interstate at 75-80mph the rest is oem. I still have the factory tires which measure 32"

 

Stick with the 2.5" for your specific JK in reference to number of doors so you have options later in your build (yes I call it a build because nobody ever stops!).

3.6L Rubicon Jeeps have no issue with 35" tires on the road. A non-Rubicon will feel sluggish because of the gearing.

 

I have a 2.5" RC lift with 1" TF spacers. 35" duratracs on my 2012 4 door sport. I love this set up and it does really well on the trail. I do have an automatic so it does start to get a little sluggish in the mountain highways.

If I were you, Id go with a 2.5" Teraflex lift with some 33s. The look and stance will look awesome and you will still be really capable off road.

 

I'm running a 4" lift with 35"s and I'm still running factory 3.21 gear ratio you don't have to regear you can but its not a must don't let people lie to you I can assure you my jeep is quick I am however running a super chip and cold air intake with the viper swap but I can run 90mph at 2000 rpm no problem

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