Race is loud and drones, but it sounds soooo good! I was tired of the loudness and took mine off and even posted it for sale, but now I'm thinking of putting it back on this weekend, stock is way too quiet, and it's a tough act to follow.
The loudest range is between 2-3k, very deep down there, then above 3k the exhaust characteristics change into a more exotic tone, but not too loud to let you enjoy the engine noise.
If you can cruise above 3k rpm it's actually just fine. This is around 80mph with DCT so might be ok for you.
2015 M3 6MT Stripper | Yas Marina Blue, Cloth, CF | Adaptive M Susp, 437M
2013 X5 xDrive50i | Carbon Black | M Sport + M Perf, 333M Wheels