Good track tire if you can't or do not want to bring R compound tires to the track. Almost as good as old DOT type R compound tires. Drove 5 track days in a row at Barber Motorsports and was very satisfied with these tires. Wear on track was very good, with good communication and no loss of traction as they heated up towards the end of each session. A little understeer when compared to R compound tires. On the highway I was amazed at how civilized they were. Both comfort and noise level were great.