Franklin and I just finished installing these on my 1M. Not as tough as I thought it would be, but definitely a 2 person job. Using an iPhone app I measured -2.4. Next step is to take it to an alignment shop to measure the range of adjustment.
2011 E90 M3 ZCP/AW/Ohlins R&T/Vorshlag CP/Stoptech ST-40 Trophy Street