MY2012 E93: Around the 800 mile mark the the stock exhaust changed its tune and became a bit more "throaty." It did not get much louder.
I prefer a deeper sound, but not louder, from the exhaust.
(If I wanted a loud car, I'd have gotten a '68 Dodge or a Harley-Davidson.)
M3 Cabriolet; Le Mans Blue Metallic.
. . . .Munich . . . >. . . .Houston
When one wants a cabriolet, is there really any other choice than an M3? No. No, there's not.