Great tire for the price! I needed some tires for the summer/track days. I went to a 2 day driving school and these Dunlops performed great! The mornings were quite cool yet these tires stuck pretty well. The Z1 SS's were predictable, responsive, and grippy. I never ran out of tire, even in an Oh Sh1t...there's a corner moment.
I'm a beginner on the track and these tires should provide plenty of performance for anyone starting out in high performance driving. I really can't vouch for someone who has had more experience than me.
My only complaint...shorten the product name a little. Direzza Sport Star Spec Z1?