User tyre reviews for tyres on the Alfa Romeo 156 V6 Sp3:

These tyres are hopeless. For a so called performance tyre they are very dissapointing. I had one scary moment in the dry when my front wheels lost traction, causing me to under steer into oncoming traffic. Luckily I survived.
Wet grip was also nothing to write home about, they are also noisy and have an average wear rate.

You can but far better tyres for much less cash.