I purchased a set of these tires for my Trans Am to use for regular driving and some autocross. They are a great tire for both wet and dry driving, I am continually surprised by how much traction they have in wet weather. They have worn down more slowly than I initially expected. Plenty of grip for any street driving, although not high enough dry grip levels to be a true autocross tire. The tires still performed well in competition, although long hot days would cause the tire to get somewhat greasy. (At an autocross)
I have driven on these tires in colder temps, and they still do okay. Being a summer tire, I have not tried them in snow.
These tires feel very confidence inspiring. They let you know when you are approaching the limits of adhesion, and I have gained a great deal of confidence in the handling of my vehicle.
I would definitely buy these tires again.