Sommerreifen-Test der Größe 225/40 R18: Von zehn Reifen macht einer schlapp - SPORT AUTO
if you can't work out what the scores mean, try google translate.
A-brands reign supreme it seems, and the Vredestain Ultrac (Vorti) isn't a particularly high scoring tyre.
These tyres are tested in the same size as you need, which is important as performance can vary alot depending on size.
The test car was a Mercedes A250 not too dissimilar to a Giulietta in size and shape, no idea what the suspension is like on these though
I was also after the Michelin Pilot Super Sport. They do have our size in Aus (ozzy tyres had them on sale briefly) but it is a few months away before they have new stock. My second preference was the goodyear AS2 but they are hard to find in the correct load rating.Due to replace mine in the near future, was looking at importing some Michelin Pilot Super Sports from tirerack as they don't stock this particular spec/size in Australia, but I can imagine having a blowout it would be a pain waiting for a replacement so I've scrapped that idea.
I'm looking at the Michelin Pilot Sport 3s now, which sacrifice some dry for better all round/wet performance. Still apparently better dry performance than the standard fit Pirelli Rossos though.