This is a great mod, think I'll go down this route when something pops up online although I already have a Wavetrac which I'm very happy with. It should make a huge difference. I wonder how the m3 diff works with the DSC/DTC though.
BMW 135i N54 TWIN TURBO
Quarter Mile email@example.com - Street Tyres
Queensland Raceway Sprint 1:01:22 - Street Tyres
Queensland Raceway Clubman 1:04:74 - Street Tyres
Lakeside Raceway 1:03:97 - Street Tyres