I have 235/35/19 on my mkiv and I found the ride felt as good as if not better than standard.Make sure you go 235 though as this keeps the aspect ratio correct.I also think it depends what tyres you run.I have goodyear F1 gsd3 because I like how predictable they are in the wet.(which it always seems to be).PS just watch the big pot holes.
^^^^ the same tires, love them, very predictable. 2 weaknesses, a little shaky when cold, and also initial response to steering could be better. I am yet to see any tires coming close to these in rain, great handling on dry too