I have a 2009 BMW 335i, purchased these tires to replace the run flats.. Best decision ever! The DWS emblem on the tire vanishes over the life of the tire, letting you know when your traction is gone. After 18000 miles on all 4 tires, my fronts still have DW, (Good dry and Wet traction) and the rear two have faint symbols of the D left.. (Meaning I probably need to replace them soon, dry traction is fading. Overall I would give these tires a 9/10. I really don't have much to compare them too except the horrible run flats that came with it when I bought my car. I balanced and aligned my car after about 12000 miles on the new tires. So I believe I got good use out of them. I haven't bought new ones yet, I am going to try and get 20000 out of the rear tires. Most of my driving has been around town and short trips on the weekends. So for the price, I cant complain at all!