Abs is the best, that is what oem bumpers are. Urethane are also good quality. Fiberglass isn't too bad but it is more prone to damage. You will pay more for abs and urethane. I would say for skirts, wind, and rear fiberglass whould be fine, but the front bumper takes the most abuse so I would consider abs or urethane for that.
PRESIDENT OF THE OVER 10 YEARS OLD AND UNDER 100K MILES CLUB
1993 325i 5spd
Benfer Performance Intake
M-tech Pedals and Shiftknob
Bavarian Auto Floor Mats
Wheelskin Steering Wheel Cover
Panasonic Head Unit
Euro Projector Lights w/ black Housing
Black Housing Clear Corners
MORE TO COME!!
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