just got a perrin front & rear sway bars and couple of days after installing it i started hearing scraping noises under the car when i hit some bumps, front & back, like plastic scraping the gound or the tires (not the "clunk" sound)...checked everywhere but cant find where its coming from, havent heard of this problem before w/ perrin swaybars so i have no idea, anybody got opinions or suggestion on wher to look or where the sound might be coming from

 

be sure to grease the snot out of the bushings! not a spray lube, but a silicone based grease works best with urathane bushings.

when they are dry they can make a strange sound like you describe. it is the sway bar "chattering" in the bushing as it moves.

Phil

 

ima go ahead & try dat, thnx phil