I have just purchased these for my Mercedes w211 e320cdi, before I was using second hand tires such as bridgestone, dunlop, pirelli, falken 452's, these are just as good I don't understand why these people are giving them bad reviews. firstly and most importantly you have to make sure your suspension is up to standard that means ball joints, lower arm upper arms, tie rod ends, most important no cracked springs or damaged leaking shocks, after that tire pressures have to be precise and tracking alignment then only you can have decent test of tires. these tires are new so are better than used tire with no history. I would rather buy new then get a good brand which some joy rider has abused and run on flat. overall I am satisfied with this product and cannot comment too much as im still testing..