Mind you that's with windows up its 78-82db at WOT.
Idle is about 50db.
Windows down is probably much higher.
It's not too bad...but clearly not obnoxiously loud.
2012 335i Mineral Gray
M Performance Whore: PPK|Exhaust|Brakes|Performance Suspension Struts & Springs|LSD|Black Kidney Grilles|CF Spoiler and Mirror Caps|Bav Stage 1|400Ms|BMWF30.com