IRS alignment setting for wide rear tires

[Michael Ghia]

Bruce,
Point taken... for some reason I was thinking that it was the inner leg which the bolts were on
Going from the outer TA being longer to being shorter ... as in pivot point... yes it reverses the action.



Chers

Mike

Originally Posted by Bruce2

Positive Mike (pun intended)

As the stock suspension articulates, the pivot point is not the TA's inner pivot. It is also not the center of the torsion bar at the spring plate. It is along a line drawn between these two points. Because this line is not parallel to the torsion bar but tilted back as it extends from the spring plate's axis to the center of the car, the TA goes negative camber when the TA goes up.

Now loosen the 3 bolts between the TA and SP. The new axis is along a line from where the 3 bolts are to the TA's inner pivot. This line is tilted opposite of the one above, so therefore camber changes are opposite.