This is the 5th different tire that I have tried for my 2003 Cobra which is upgraded to 500 HP and 600 Ft-Lbs at the rear wheels, so finding a tire that can get going off the line has been a struggle. I can say that OVERALL, these are the best tires I have ever owned, but they are also the most expensive. The responsiveness and ride comfort/noise level are better than the two different Kumho and Goodyears that I have had. The Kumho XS had a bit better traction from a dead stop, but they are softer so that is to be expected. Cornering grip and off the line grip is great for a tire that should last 20,000 miles, however, like the description says, these tires DO NOT WORK WELL IN COLD TEMPS!!! When it is below about 40 to 45 degrees it's like driving in the wet until the tires are warmed up which can take a few miles, and even then the performance is FAR lower than when the temps are above 50 to 60 degrees. Overall, I am very satisfied with my purchase, and had I not upgraded the car to a 208 ZO6 Corvette I would have purchased them again. I had put about 10,000 miles on the tires when I sold it and there was about 65% treadlife remaining on the fronts (265-35-18), and about 50% left on the rears (315-30-18), and that is with quite a few smokey take-offs... 20,000 was what I was hoping for and would have gotten there no problem. The only other tires I had for the car that lasted that long was the Kumho XS, which I would rate as a close second, (probably a tie in performance ratings) but I could never get them balanced so there wasn't a shake over 100 mph, and once the treadlife was below 50% they were a bit sketchy in heavy rain, but that is somewhat to be expected for that type of tire.