geoffpreston
New member
I've just bought myself a Z4 35iS M Sport (E89) and now I've got around to really driving it, I find it a bit loud. I suppose 'burbly' is the best word - especially on over-run. Initially I thought it sounded great but I now find it tiring. Is there anything that I can do to quieten it down - even at the expense of some of the performance?
