Having previously run the Bridgestone Potenza RE01R and Yokohama ADVAN Neova AD07, the Dunlop Direzza Sport Z1 Star Spec was a welcome surprise at a much lower price point. With at least as much grip as the RE01Rs but almost as sharp as the AD07, the Direzzas deliver confident carving of precipitous mountain roads. The RE01Rs were irritatingly comfortable with good ultimate grip but much softer turn-in and greasy communication at the limit. The ADVANs were remarkably crisp at turn-in and blissfully responsive through the turning arc but delivered only good ultimate grip. At 50 bucks less, the Direzzas blow the RE01Rs away in everything important to the true sporting driver and shows the ADVANS the door on all but their immediacy. With no number to back this up, I'd bet that lap times would be significantly better on the Direzzas. The RE01Rs ride smoother and softer than the other two, but who cares? Tread life on all three was very good at 15,000 to 18,000 miles with nary an offramp left unattacked. With the others as 7/10ths tires, the Direzzas are easily confident at 8/10ths and recover nicely from 10/10ths. I wouldn't hesitate to recommend the Direzza Star Specs for everything from really enjoying mountain roads to on-track performance just south of competition tires. In fact, many track day slick-tire pilots are using these as their wet-weather rubber. Very satisfied.