Bought front 225/40-18 and back 255/35-18 2 years ago to replace the stock Bridgestone Potenza run flats that came with the car new. I like to take corners aggressively when able and take off briskly (the whole reason I bought the 335i - RWD) and the Conti's don't come close to the Potenzas which would hold a rounded corner at 50 mph while the Contis would slip and drift a bit making me less sure about aggressive driving with them. BUT the Potenzas absolutely ---- in snow - even just a dusting, needed replacement at 15k and were very expensive to replace. I bought the Continental Extreme Contact DWS for the price and the longevity as well as reviews in the snow. They do perform well enough in snow less than 4 inches, but you still slip and slide a bit. As far as longevity - I have gone about 16k miles now and need to replace the rears (prob due to my aggressive driving) and the fronts are close as well. So, overall - if price and all weather are your priorities, then go with these tires. But if you are looking for purely performance, look elsewhere - like the potenzas which you will pay top dollar for. After looking around once again, I am probably going to buy the Continental Extremes again for price and so I can feel a little more confident going over the mountain in questionable weather. I am currently trying to see if I am going to be able to get pro-rated discount on the Continentals since they came nowhere near the 60k warranty on the front and 30k warranty on the back tires - we will see where that ends up!