Whilst down at the factory last week I was talking to one of the service guys and up until recently cars coming off the production line were set up with 2mm of toe out. My car was set up like this when I got it. It handled like a wild dog and would bite at every opportunity.
I then re-set this to zero toe, it transformed the steering, not perfect but much more predictable.
The service dept. now recommend 2mm of toe in, static and unladen.
When I get my car back I'll let you know how it steers.
This may take some time as it requires a new compensator and a few other bits.
I have M3W withdrawal symptoms!!!