[Sodjer]

I spent a considerable amount of money buying a 530D M Sport F10, and am extremely disappointed at the excessive road noise whilst travelling. The tyres which are fitted are Dunlop Sport Maxx GT 19 inch Run flats. These tyres are advertised at producing 68db, probably the claimed quietest tyres for the Beamer, well if these are the quietest I would hate to hear anything above this 68db limit. Very disappointed BMW as a transit van is quieter than this, you would expect next to no noise transmission from the tyres inside the car, for this prestige make of car. I am seriously considering getting rid of this and jumping ship to an Audi. My 530D E60 was quieter. Can anyone advise of a similar situation, is it because the tyres are run flat that so much noise is produced.