just bought 320i 2.2 tiptronic year 2001. i experienced unstable steering acceleration especially when the road condition is bad.i never drive a car with DSC system.Is it normal under DSC system?or there are other problems such as tyre condition or other things.i have checked the tyre and its ok.DSC sensor is new anyway.The problem is unconfortable and its more dangerous in a high speed driving.it just like somebody pull your steering to the other way while the road is straight.imaginethat happen in the 180km per hour driving!could somebody advise on this.thanks in advance.