I think it suppose to hep pull more air though for the brakes, atleast thats how it seems? only real reason i see to use them is becuase they are wider.

dunno what it vents considering you have all sheetmetal in that area of the car behind the fenders, maybe it will vent the door jamb if you dont install the plastic splash guard that weighs about 3 ounces? Probably all it will do is increase wind noise when you are on the highway?



I guess for more tire width, but the additional weight of the tires and wider rims will weight more then the weight savings of the fiberglass.