I replaced the OEM tires with these DWS Extreme. First week, I hated it. The ride and handling doesn't seem right. It turns out I need to have qualified tire center to mount and balance. A co-worked told me to go to a performance shop to have it remount and balance with a Hunter road force balance machine. The ride and handling is much better (almost like a new car). I have taken my car to 145 MPH and I corner hard (70-80 MPH on exit ramps). These tires are great price/performance! A year and half ago, I ran over a tool that fell out of a truck on the high way doing 70 MPH. My left front tire was sliced on the side wall about 3 and some damage to the body. Within seconds, my car indicated low tire pressure. The car remains stable and I know I need to be careful. The tire held up and allowed me to take the next exit and park my car. I had that tire replaced. I may need a new set this fall if the S is faded out. If not, I should be able to keep it another year. The most important thing for me is finding a qualified place to do the mount and balance. This is KEY on performance cars and tires.
My friend installed a set of DWS Extreme Contact on his BMW 335. He made through this past winter in Michigan with his rear wheel drive (they had over 100 of snow for the season).
P.S. I noticed I lost about 1-2 MPG when I switch from the OEM tires to the DWS...the price I'm willing to pay for better traction.
I'm told Tire Rack do a great job on mount and balance if you buy tires and rims.