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Old 03-27-2023, 04:47 PM   #1
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Jeep Tow

If you have a DP Tag Axle and flat tow a Jeep Wrangler JL with a factory 2 in. lift plus an added 2.5 lift do you have any swaying of the jeep above 50 mph?
TIA.
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Old 03-27-2023, 05:13 PM   #2
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Why do you think you would have swaying? You should have a riser off of your motorhome 2" mount to level up your tow bar.
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Old 03-27-2023, 08:41 PM   #3
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Shouldnít sway, but you need to level the towbar with a proper hitch riser anyway.
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Old 03-27-2023, 08:52 PM   #4
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What they said ^^^^
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Old 03-28-2023, 04:51 AM   #5
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The swaying is possible if there is an alignment problem due to the lift. I had a 16 that had a raised suspension with larger tires and had no issues. Just make sure your alignment is within spec.
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Old 03-28-2023, 09:20 AM   #6
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Good alignment and a level tow bar are the keys.
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Old 03-28-2023, 12:41 PM   #7
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As others have said, make sure your towbar is level and you really shouldn't experience any swaying while being towed. Not sure why you would assume that you would.

I am towing a JKUR with 4.5" of lift on 37's behind our 40' tag axle DP and it tows smooth and straight as can be and have been since 2011.
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Old 03-28-2023, 07:21 PM   #8
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Originally Posted by Winger2 View Post
The swaying is possible if there is an alignment problem due to the lift. I had a 16 that had a raised suspension with larger tires and had no issues. Just make sure your alignment is within spec.

Yes it will sway if the caster angle isnít correct. Especially if the hitch connectors are sloppy.
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Old 03-29-2023, 12:06 PM   #9
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Thanks

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Originally Posted by burgmark View Post
Why do you think you would have swaying? You should have a riser off of your motorhome 2" mount to level up your tow bar.
Thank you,
Jeep Dealer Tech. told us it would sway with a lift.
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Old 03-29-2023, 12:07 PM   #10
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Thank you
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Old 03-29-2023, 12:09 PM   #11
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Thank you,
Jeep Dealer Tech. told us it would sway with a lift.
Wanted more opinions before lifting.
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Old 03-29-2023, 12:14 PM   #12
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Jeep Tow

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Originally Posted by blaneyfan View Post
Wanted more opinions before lifting.

If itís lifted properly and the jeepís front end alignment angles are within spec it will not sway. So take it to an alignment shop after the lift and tell them to do whatever needs to be done to keep the caster angle correct. A little extra caster is better than less.
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Old 03-29-2023, 12:33 PM   #13
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Quote:
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If itís lifted properly and the jeepís front end alignment angles are within spec it will not sway. So take it to an alignment shop after the lift and tell them to do whatever needs to be done to keep the caster angle correct. A little extra caster is better than less.
Agree with Rob_M with one addition. Take it to a shop that specializes or at least is very familiar with lifted/modified suspensions as most shops will use OEM specs. OEM caster specs on a late teens Wrangler are 4.2* +/-.5*. Those specs works great on a stock Jeep Wrangler but as we run larger than stock diameter tires (generally why we lift our Jeeps), this moves the axle centerline further away from the road surface and with those larger diameter tires more caster must be added to avoid the "twitchiness" that can accompany too little caster. I have found around 5.5-6 degrees of caster works great for 35" tires and 6.5-7 works great for 37's. Handles great going down the highway at speed but doesn't give too heavy of a feeling when turning and has good return-to-center characteristics.

The balancing act comes when trying to keep the pinion angle in proper alignment with the driveshaft as too much induces a vibration. I have found when you start getting around 4+ inches of lift that more pinion to caster inclination angle is required. Unfortunately that is not an adjustment and must be accomplished by re-clocking the knuckles OR purchasing an aftermarket axle such as a Dynatrac ProRock Unlimited or Currie which have more separation angle built into them.

Also a bit of toe-in aids with a larger sidewall tire, closer to 1/8" works fantastic.
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