Thanks guys for the nice replay .. I'm using toyo r888 for my gtr and I like them .. I wish they make for the gt2 stock wheel size . Now my options are :
1- michlen pss 325/30/19
2- hossier r6 325/30/19 (but I'm afraid of them)
3- Toyo R888 305/30/19

so ??

 

And 4- the new dunlop sport maxx race 325/30/19 .. but I don't have any idea on them

 

so which did you end up doing ? thoughts ?

 

do not put anything other than a pilot cup, pirelli corsa, or r888. (i think dunlop has a "cup" type tire now too)
you should not be spinning.
either you are running way too much tire pressure, or you have too much camber. cold pressure shouldnt be more than 32-33lbs.
stick with what porsche uses, 325 30 19.

i personally run a 305 30 19 on my "race" set up, and the tires are so damn sticky that i broke an axle.