Great tires at an amazing price.
Atturo AZ850 hands down is the best performance tire you can get without breaking your wallet. I had to replace all four tires on 2017 CTSV and if I replaced with the Michelin tires would have been closer to $2k just for the tires. Mind you the Michelins below 40 degrees would have you questioning your driving abilities. I paid less than $700 for all four tires and have been throughly impressed in all driving conditions with the exception of snow because I wouldn't drive the car in snow and we don't get snow where I live. But for the money you can't beat the value the tires handle great, zero road noise, even in the rain it takes a lot for these tires to lose traction and break loose and that's on a 650hp supercharged V8 sedan. Definitely wouldn't think twice about buying these tires again.