[Lancelot]

Look for threads about f80 LCA (lower control arms), there are plenty of references on the topic; i went there myself, and back. M3 LCAs are indeed providing added negative camber and the benefits of noticeably sharper turnin, however i got two major drawbacks from them
- high speed stability (~130km/h or 80mph) issues: car became so sensitive to crosswinds that it was dangerous whenever a wind gust or overtaking a big truck
- rubbing: these control arms move the wheel further front and started rubbing at the front of the wheel pit.

These arms are not made for f30 chassis, bear in mind that f30 and f80 subframes are completely different, unlike previous generations of 3 series.

The best way to get more camber is to swap the wheel hubs with the -0.5deg versions intended for f30s (and come as default to m135i/m235i), which respects the intended geometry of the car, other options are to be avoided in my opinion.