I have had these tires for approximately 2 to 3 years now. I have been very satisfied with their performance thus far. I live in the snowy upper mid-west where I drive in all weather conditions. I have not had any problems with traction in the snow yet on unplowed roads in town and on highway. I understand that I drive a heavier car and I have phenomenal traction. The silica sand in the treads greatly help. My CS4's ride smooth and quiet at all speeds. I rotate and balance my tires every 6,000 miles and my alignment has been done recently.
I have no complaints and only good things to say. I highly recommend these tires to anyone. They are very comparable to any name brand tire and these are made in America. I will buy CS4's again and again on all my passenger vehicles.