I recommend the Nitto NT555 radial. They also make a drag radial but I have not tried it on my Z yet. As for the NT555 radial, I know of many LS1 owners around here that are cutting 1.8 60fts with them and they have lasted them about 24k miles. I have not gotten a chance to go to the track yet so no #'s for me. Not to bad for a performance tire. I have 245/45/17 on the back of my Stg 4 TT and they hook up quite well if you slip the clutch, but at higher RPM launches they spin quite easily too:)