Ive had mine on for over a year, never hit anything.
Maybe slow down when you come to speed bumps??
It isn't even speed bumps. It's just plain bumps in the road or driveways. My car isn't lowered but my struts suck so maybe the car actually is riding lower than stock.
1998 GTP Sedan: Gen III, Speedy Daddy Headers, SLP Catback, Magnaflow High Flow Cat, Open Cone Intake, Autolite 104s, Debadged, more to come!