How can you even compare those two tires? They are completely different.
Star spec is a max performance tire with a large contact patch and extremely stiff sidewall. It is amazing in terms of grip and response, as well as wet performance, but it will definitely be rougher and wear faster than the T1S. It is loud, at a level that I would not accept from the T1S. The Z1SS + the Hankook RS3 are people run if they do competitive autocross or track days on street tires.
The T1S just seems to be your average "high performance" summer tire.
Last edited by dreamdrivedrift; 11-13-2012 at 08:42 AM.