Hi ppl,Does any1 here who owns a 320i or any other models faces this problem?... the woozing high pitched sound will be heard when it touches 45kmph to 50kmph but after that the sound disappears... i brought it to the service centre and they said they have checked the whole car (engine, system &etc) n they said its normal for every 320i models...i've tried to ask around some saying that its the cause of the Run Flat Tyres are making the problem but i was thinking if its the problem with the tires y would the sound be heard at that speed n not other speed...Please advise...Thank You.