If there's one thing that annoys me more than anything at the moment it's people banging on about the lack of a LSD.
THE M135I IS NOT SUPPOSED TO BE A HARDCORE TRACK CAR.
Excuse the caps, but this really needs to be drilled into people. The M135i is a highly refined, daily-driver that even my Grandma could drive comfortably, that also happens to be extremely rapid. If I wanted a hardcore track car I would get the 1M. One of the reasons I like the M135i so much is because it's so comfortable for daily driving and has that Jekyll and Hyde characteristic.
The fact the thing still bombs it round a track at insane speeds is a credit to BMW.