Quote:
Originally Posted by Miyota
I am running 285s. I just want it to handle like factory even with the lift. Do you think the fact that it doesn't return to center is from the ball joints binding?
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Of course we can only give you a theoretical answer here, I've never seen ball joints bind. The two angles that create self centering steering are Caster and Steering Axis Incliniation(SAI). They are both the same line drawn between the upper and lower ball joints. Caster is measured as viewed from the side of the vehicle, and SAI is measured as viewed from the front of the vehicle.
Generally the lift pushes the suspension down so the angles change, in a negative way. The Caster becomes less positive, and so does the SAI. Aftermarket upper arms help to correct these angles by placing the ball joint slightly rearward(positive caster) and inboard(positive SAI).
It would be good if you had alignment readings as a baseline, so you could know where you might end up with the new arms.
Here is some further explanation.
Circles and Arrows