Originally Posted by Juan.sidarta
It doesnt really matter for the rear and side skirts if its fiber glass or poly. You would almost never get ur rear damaged because it's too low, neither on the sides. The problem is, if you hit a pole or something, but again, if that happens you need a repaint and fix anyways
so for rear and sides, it doesnt matter what material it is, so long as it looks good
I disagree, in addition to Fiberglass cracking easily not easily repaired, it is typically hit or miss fitment. ABS or Polyurethane offers much better fit and finish and is easier to control production.