It is not the clutch material that bothers me, that is soft material. It is the large metal plates in the center with springs pushing them against the side gears..... Any time you turn a corner, go around a slight curve on the highway, etc, those gears spin at different speeds which causes those plates to wear into the side gears and create metal debris. Without getting really creative there is no way around this. This is why the Torsen or GM racing diff is the best way to go, but yes it has a very hefty price tag to go with it. Those diffs use worm gears that will bind when wheel spin occurs. There is nothing to wear and no undo stress going around corners.
