Kuhmo 7-11s?

no way...kuhmo supra ecstas are great street tires. very good dry grip and wet grip.

they are a perfect step up for the street because they stay cold. however they suck for the track because you want your tires to heat up there.

supra ecstas are a great all around street tire. long life, quiet, and like i mentioned before about the grip.

and the only diff between the 711s and the 712s is the tire rating.
711s are w rated, 712s are z rated.

i went with the 711s as they are cheaper. and i am not going to be going over 130 mph anyways( w rated ), and i definetly won't be going 149+( z rated ).
i didn't need the zs, no point in them, so i saved a few bucks and went 711s. great tire, especially for the price.

they also have a super sticky tire they recently released...i forget the name but its awesome! right up there with S03 Pole positions