I have driven 25,000 miles on these OEM tires. They seem to be wearing pretty well and I should get another 20,000 miles at least. They handle well on dry pavement without too much noise. Some road noise is noted on grooved pavement. Ride is smooth, although the CTS has a pretty firm suspension with the Performance package, so it is a little hard to tell. Wet handling has been good, no white knuckle moments noted. We have had a couple of snows this winter and I have been pleasantly surprised by how well the tires have done on packed snow/ice. I have not driven in deep snow very much due to the low ground clearance of the CTS. AWD certainly helps the traction in this car. Stability at high speeds (85+) is good. I run them inflated to 36 psi all around.