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Old 10-03-2011, 11:20 PM   #1
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AEV 3.5 vs 4.5

Ok so my understanding is you get the 3.5 for 35" tires and the 4.5 for 37" tires. My question, why would one chose 37's or 35's forgive me if this has been asked a hundred times search feature not so food on my phone. Also planning on Tom woods drive shafts but the AEV kit says it doesn't support pinion angle adjustment so how would one then go about adjusting the pinion angle? Thanks in advance

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Old 10-03-2011, 11:45 PM   #2
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if i remember right i think the aev lifts actually come with a bracket that repositions the lower control arms and a cam bolt, been a while since i looked.

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Old 10-04-2011, 01:09 AM   #3
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The brackets eliminate the need for cam bolts and adjustable control arms. They work so well that itís like night and day difference.
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Old 10-04-2011, 07:40 AM   #4
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What size tire are you looking to run? You can run those sizes on smaller lifts. You dont have to go that high unless you just want to...

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Old 10-04-2011, 08:36 AM   #5
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Originally Posted by KrawlOff-Road.com
What size tire are you looking to run? You can run those sizes on smaller lifts. You dont have to go that high unless you just want to...

-Jason
I don't know for sure. That's what I'm trying to figure out. I'm thinking 35's is probably enough, but of course I have friends that offroad telling me 3.5 inch lift and 35s isn't enough. But none of these guys have a JK wrangler either so their input is fairly useless.

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Originally Posted by 1222
The brackets eliminate the need for cam bolts and adjustable control arms. They work so well that it’s like night and day difference.
Understood, however the AEV installation instructions state aftermarket driveshafts with double cardan joints will require a pinion angle adjustment that is not provided for in this kit. I plan on running the Tom woods driveshafts front and rear.
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Old 10-04-2011, 08:38 AM   #6
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Yes, it is. If you are wanting to run 35's, you can save yourself the money and just go with a 2.5" lift. You can fit 35's on a JK a lot easier than you can the older Jeeps.

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Old 10-04-2011, 08:47 AM   #7
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Originally Posted by KrawlOff-Road.com
Yes, it is. If you are wanting to run 35's, you can save yourself the money and just go with a 2.5" lift. You can fit 35's on a JK a lot easier than you can the older Jeeps.

Let me know if we can help!
-Jason
Thanks! Is there any benefit to 37's over 35's I plan on hitting the trails at least a couple times a month, more if time permits. But it has to have decent highway manners as well. (for now) at least for a year or two till I buy a new commuter car.
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Old 10-04-2011, 08:48 AM   #8
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On a JK, not only can you run 35" tires on a 2.5" lift, you can run 37" tires on a 3.5" lift with minor fender mods or flat fenders. I don't see any reason to go with a lift higher than 3.5"/4.0" unless you just like to increase your center of gravity and roll over chances. There are people on this forum running 40" tires with less than 4" of lift.
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Old 10-04-2011, 08:51 AM   #9
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Originally Posted by 2012-Rubicon View Post
Thanks! Is there any benefit to 37's over 35's I plan on hitting the trails at least a couple times a month, more if time permits. But it has to have decent highway manners as well. (for now) at least for a year or two till I buy a new commuter car.
37" tires will provide about 1" more ground clearance over a 35" tire, but they cost more to buy and add more stress to the axles and other components. You will also have more rotational mass with the 37" tires which will cause more wear on your brakes and longer braking distances when you try to stop the Jeep. You have to weigh your options and decide. For me, I chose 35" tires. I may do 37" tires in the future, but for now, 35" tires are what I'm doing when I get my lift done in a few days.
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Old 10-04-2011, 08:53 AM   #10
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Originally Posted by bo9roadking
I don't see any reason to go with a lift higher than 3.5"/4.0" unless you just like to increase your center of gravity and roll over chances.
Understood. Thank you!
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Old 10-04-2011, 09:00 AM   #11
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Understood. Thank you!
You're welcome. Also, with a smaller lift, you shouldn't need new driveshafts. Another advantage to smaller lifts means less money spent on reengineering the suspension and drive train to keep things operating smoothly. That means more money in your pocket to buy other things for your Jeep.

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