This.
Make sure you’re not talking about the ebay 18’s that look like the Englishtown 19’s as they apparently do not fit over the BBK.
what are the pros and cons of putting 19's on a gti?
Source: I have 19" Pretorias on my GTI and love them
I had those on my GTI as well and they are one of the coolest looking OEM wheels.
And light! 21lbs for an OEM 19" wheel is awesome. Flow formed, made by BBS.