dropped 35mm and the gt-tdi is lower then the 1.9 as standard, yet my car with 40mm looks lower sat on 15" steelies, ( not car lower , arch gap lower/less )
how can that be right unless i am mistaken!!
either way, unless you have strangely wide wheels with a crazy offset, i wouldn't expect rubbing, seeing as GTI models came with 18" alloys (i think) so your car running 18" should be - no problemo!