If by aero wipers you mean the new type ones, very flexible, as fitted from 2004? I have these, and hugely regretted putting rainx on my screen! They are superb wipers, but went straight to judder judder judder the moment the rainx went on.. took em off, cleaned em, put em back, no change.. bought a 'spare' set and replaced them.. no change.. tried loads of things to get the rainx off.. b***y stuff lasts for ages! I know not everyone has found this, but I have NO plans to try rainx or any equivalent again with my A4!