I have fully adjustable arms front and rear. Thrust angle is +.45 degrees. Wondering which side rear arm to lengthen and how much.. like 1/2 turn, full turn, etc. Bringing it back in for new alignment and wanted to see if I can get it closer. '09 JKU 2.5 lift.

 

There’s no way to give you any solid number here. It all depends on how long your arms are, thread pitch of the joints and probably the distance between front and rear axle. If you’re bringing it in for an alignment, let the tech adjust the arms.

 

Most alignment shop techs do not have a clue on something like this. And/or they do not want to deal with it.. alignment machine is booked for the day and they do not want to mess around with dropping arms etc.

I do understand what you are saying, but figured someone out there would have have a rough idea.. all that I have seen are fine thread and it is just stock arm length like most people are using.

 

• The thrust angle measures axle alignment by comparing the angle of the rear axle with the centerline of your vehicle. Looking at a car from above, you would draw the thrust line perpendicular to the rear axle. This identifies the direction in which the rear wheels want to roll. Positive thrust angle means the thrust line is pointing to the right hand side of the vehicle. Negative thrust angle means the thrust line is pointing to the left hand side of the vehicle. If the thrust angle is out of specification, moving the axle to body relationship will change the thrust angle reading.