Help in deciding the correct 3.5 to 4.5 lift for our 13 JKU - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 6 Old 06-27-2017, 10:21 AM Thread Starter
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Help in deciding the correct 3.5 to 4.5 lift for our 13 JKU

We recently just added another JK, this one is a 4 door Rubicon. I know there are many threads on lifts, I have been reading and researching for months. Just want some opinions on what y'all are running. The build for this JKU will consist of 37's (Toyo 37x12.50 17). I read about upgrading the front axles and will add C gussets, big brake setup, and regear to 4.88's. This is a DD and must have good highway manors due to we take it from the Florida panhandle to North Georgia mountains. It's on the road 85% and on trails 15%. We do mostly trails, no major rock crawling. My first choice was the Rock Krawler mid arm 3.5 X factor lift. But the wife doesn't like the flat fenders so I got to keep the original JK fenders. So I believe this setup would give me rubbing problems. The second choice is the AVE 4.5" lift. My third choice is a 4" Teraflex. I'm running a 3" Teraflex with 35's on our 2 door JK with no complaints. Thanks in advance for any information to help me with this.
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post #2 of 6 Old 06-27-2017, 10:28 AM
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Quote:
Originally Posted by Jb80 View Post
We recently just added another JK, this one is a 4 door Rubicon. I know there are many threads on lifts, I have been reading and researching for months. Just want some opinions on what y'all are running. The build for this JKU will consist of 37's (Toyo 37x12.50 17). I read about upgrading the front axles and will add C gussets, big brake setup, and regear to 4.88's. This is a DD and must have good highway manors due to we take it from the Florida panhandle to North Georgia mountains. It's on the road 85% and on trails 15%. We do mostly trails, no major rock crawling. My first choice was the Rock Krawler mid arm 3.5 X factor lift. But the wife doesn't like the flat fenders so I got to keep the original JK fenders. So I believe this setup would give me rubbing problems. The second choice is the AVE 4.5" lift. My third choice is a 4" Teraflex. I'm running a 3" Teraflex with 35's on our 2 door JK with no complaints. Thanks in advance for any information to help me with this.
What you want and what you do contradict each other.

The amount of work needed for 37s doesn't add up in my book if you don't off road often. Granted you can fit 37s technically without a lift. (remove fenders, and I believe spacers are needed) but to do all that work, spend all that money and make your jeep that much crappier on the road when 85% of your driving is highway? I don't recommend it.

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post #3 of 6 Old 06-27-2017, 10:41 AM
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Very generally, you will need 4" of bumpstop to clear 37" tires

So you can decide how much lift you want to do based on that.

To put another way, how much compression travel (if any) are you willing to lose to be a little lower. Keeping in mind advertised lift height is just an average, and yours will vary based on options on your rig.

Also know that, most coil packages are designed to level the jeep. That is the actual lift in the front is more than the actual rear lift.

A 4" lift brings all sorts of other issues, such as: camber, exhaust clearance, etc...

Honesty, flat fenders make all this so much easier. But I understand needing to keep mama happy.

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post #4 of 6 Old 06-27-2017, 10:47 AM
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You can always control the rubbing with the proper amount of bumpstop. Usually the amount is the same as the lift height= 3" lift equals 3" bumpstop.
At 4" lift height you will probably need to replace both driveshafts sooner than later, fyi.

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post #5 of 6 Old 06-27-2017, 03:01 PM
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Quote:
Originally Posted by Jb80 View Post
We recently just added another JK, this one is a 4 door Rubicon. I know there are many threads on lifts, I have been reading and researching for months. Just want some opinions on what y'all are running. The build for this JKU will consist of 37's (Toyo 37x12.50 17). I read about upgrading the front axles and will add C gussets, big brake setup, and regear to 4.88's. This is a DD and must have good highway manors due to we take it from the Florida panhandle to North Georgia mountains. It's on the road 85% and on trails 15%. We do mostly trails, no major rock crawling. My first choice was the Rock Krawler mid arm 3.5 X factor lift. But the wife doesn't like the flat fenders so I got to keep the original JK fenders. So I believe this setup would give me rubbing problems. The second choice is the AVE 4.5" lift. My third choice is a 4" Teraflex. I'm running a 3" Teraflex with 35's on our 2 door JK with no complaints. Thanks in advance for any information to help me with this.
I think the AEV 3.5" lift will be perfect. All you need to do to run 37s is add one inch of bump stop to the rear. Depending on where you buy the lift, you can substitute the AEV bump stops from the 4.5" kit. Or just add one inch of bump stops. There are plenty of ready made bump stop kits that can do this.
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post #6 of 6 Old 06-28-2017, 09:12 AM
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Definitely go with the 3.5" lift. 3.5 with factory fenders is perfect for 37s, I'm running 35s on a 2.5" and it looks and functions great. The AEV is a very high quality kit and the multi rate coils will give you a great on road ride.

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