Rear lower ball joint question

[DaPCWiz]

Originally Posted by projectRDM

You really can't adjust roll center by just lengthening the ball joint. The only good thing about people selling those adjustable units is they're replaceable.

Originally Posted by racepar1

Most of the roll so called "roll center adapted ball joints" are pure bullshit. 99.99999999% of them simply space the entire ball joint up, which does nothing as it does not change the position of the pivot point. In order to adjust roll center you need a longer balljoint shank so that the pivot point itself is spaced down. Spacing the entire ball joint in any direction will do nothing for roll center.

Agreed... but they are still selling balljoints that fit our cars... not 1mm off or something..