Originally Posted by nigelnuggets

doesnt make sense. if he was changing the roll center then hed show a picture of the roll center mount with 1mm shim underneath it to raise the front roll center. but by raising the front roll center, you would decrease rear traction by increasing front traction. the shim is placed on the hub for the wheel after the bearing. i believe the earlier explanation is correct, by widening the front of the car without sacrificing the structures strength and increasing rear traction by decreasing front traction. not sure exactly, i think we should just ask salven.. LOL