I'm currently running 18'' Lugano alloys, tyre size 235/40/18 on a 1.4 TSI.
I'm looking to upgrade to 19'' Cadiz alloys, tyre size 255/35/19, which are off a Scirocco R; would they fit a 1.4 TSI? Any advice welcome!
For reference OEM Lugano alloys didn't come in 18" therefore I expect your current wheels are actually Interlagos wheels. The design is similar. I only mention this just incase you intend to sell them.
With regards to the 19" Cadiz alloys, they will fit your car although double check the tyre size as the OEM tyre size for 19" alloys is 235/35x19.