Greetings…. have the following problem: 9-3 Aero (2002) Have a hit in the steering wheel despite (multiple) balanced tires.But only sporadically.When I go off in the morning it is quite strong.Speed range between 80 and 110 km/h. Is the car “warm” it is usually gone bez. then ned occurs more so strongly or only at slowing down or in idle. Is there also days there hardly to ned notice…. Does anyone know what???