If you tighten the bushes at installation height then lower the car to the ground it grips the bushes and twists them, once it gets to ride height then cracks occur, then eventually they will disintergrate.
These bushes arnt ment to flex just hold things firmly in position, when rubber flex and twist and go back into original position.
Edited by bushi, 23 January 2011 - 05:25 PM.