depends how low ur car is?
i recently had my gti down about 80mm and i had the same problem!
u may need to raise it back up slightly to avoid rubbage!
my chassis now has anti-roll bar shaped dents in it
u cud get a big hammer taken to the part of the chassis where the bar hits? (i have been told to try this but opted out) i raised my car 3mm the day so i'll see how it goes at that!