JL Wrangler Wheel Alignment Specs - Toe, Caster, Camber

[LazyJL]

It may be time for adjustable LCAs.
I wonder why the a difference, Has the Jeep been in a front-end accident?

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[cosmokenney]

Right...I went a degree beyond 90 on the flat spot next to the diff and also measured at knuckle...if you have shimmy over washboard or potholes I recommend taking your front control arms and lengthening them another 1/4 inch at a time until it goes away...Don't be afraid of going a bit over 6 degrees every jeep is slightly different. good luck! Make sure your track bar is torqued and not moving back and forth either of course.

This stuff is all new to me, I assume you are adding length to the LCA to get 1 degree more positive caster? And one could also shorten the UCA for the same effect?

 

[ejewels]

Whats the difference between "measurement specs" and "set-to specs"? The former seem more forgiving...

 

[swampflyer]

Just an FYI the castor I found to get rid of all the shimmy in my steering wheels on bumps was around 7 degrees...the JLs love castor and the rubicons are terribly anemic stock. Add a littel spacer lift and it gets way worse...its the reason a lot of people get "death wobble" on stock JLs sometimes...I use some Teraflex alpine lower adjustable control arms because they use factory style clevite bushings and not flex joints...zero maintenance and no rattle or wobble over time.

This may be a dumb question but you like 7 degrees of positive caster? And I believe that if the flat spot at the axle is 90 degrees, then you have 6 degrees caster. So you bring it in one more degree? I ask because I am getting a lot of feedback coming from my steering.

I read on the forum a while back some guy running in high 7’s and one 8 and the jeep drove perfect. No lift. Stock.

 

[AZHellaYellaGirl]

MEASUREMENT SPECIFICATIONS

Front Wheel Alignment Service Measurement Check Specifications

| Total Toe** | Caster | Cross Caster* | Camber - Left | Camber - Right | Cross Camber*
Sport | 0.20° +/- 0.20° | 5.35° +/- 1.00° | 0.00° +/- 0.50° | -0.25° +/- 0.50° | -0.25° +/- 0.50° | 0.00° +/- 0.50°
Sahara | 0.20° +/- 0.20° | 5.05° +/- 1.00° | 0.00° +/- 0.50° | -0.25° +/- 0.50° | -0.25° +/- 0.50° | 0.00° +/- 0.50°
Rubicon and 3.0L Diesel Sport / Sahara | 0.20° +/- 0.20° | 4.80° +/- 1.00° | 0.00° +/- 0.50° | -0.25° +/- 0.50° | -0.25° +/- 0.50° | 0.00° +/- 0.50°
Note: Caster values required to be greater than or equal to 4.0° for all variants
* Cross Alignment values are determined by taking the left side value minus the right side value.
** TOTAL TOE is the sum of both left and right wheel toe setting. TOTAL TOE must be equally split between each wheel on the same axle to ensure the steering wheel is centered after setting toe. Positive toe-in and negative toe is toe-out.

Rear Wheel Alignment Service Measurement Check Specifications

| Individual Toe* | Sum Toe* | Thrust Angle | Individual Camber* | Cross Camber*
All Models | 0.125° +/- 0.25° | 0.25° +/- 0.25° | 0.00° +/- 0.25° | -0.25° +/- 0.50° | 0.00° +/- 0.50°
* For reference only. These are non adjustable angles.



SET-TO SPECIFICATIONS

Front Wheel Alignment Set-To Specifications

Model | Total Toe** | Caster | Cross Caster* | Camber - Left | Camber - Right | Cross Camber*
Sport | 0.20° +/- 0.15° | 5.35° +/- 1.00° | 0.00° +/- 0.50° | -0.25° +/- 0.37° | -0.25° +/- 0.37° | 0.00° +/- 0.50°
Sahara | 0.20° +/- 0.15° | 5.05° +/- 1.00° | 0.00° +/- 0.50° | -0.25° +/- 0.37° | -0.25° +/- 0.37° | 0.00° +/- 0.50°
Rubicon and 3.0L Diesel Sport / Sahara | 0.20° +/- 0.15° | 4.80° +/- 1.00° | 0.00° +/- 0.50° | -0.25° +/- 0.37° | -0.25° +/- 0.37° | 0.00° +/- 0.50°
Note: All wheel alignments are to be set at curb height
Note: Caster values required to be greater than or equal to 4.0° for all variants
* Cross Alignment values are determined by taking the left side value minus the right side value.
** TOTAL TOE is the sum of both left and right wheel toe setting. TOTAL TOE must be equally split between each wheel on the same axle to ensure the steering wheel is centered after setting toe. Positive toe-in and negative toe is toe-out.

Rear Wheel Alignment Set-to Specifications

| Individual Toe* | Sum Toe* | Thrust Angle | Individual Camber* | Cross Camber*
All Models | 0.125° +/- 0.25° | 0.25° +/- 0.25° | 0.00° +/- 0.25° | -0.25° +/- 0.29° | 0.00° +/- 0.50°
* For reference only. These are non adjustable angles.

Thank you for this information! I’m assuming a STOCK 2021 Unlimited Sport Altitude will have the same specifications as the Sport listed above?

 

[Mjr.Crash]

Nobody knows .. no official specs linked .. good luck !

 

[Gangplank]

Yes should be the same I believe. All wranglers have essentially the same suspension parts except the springs & tires.

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