I actually just pulled the trigger on some 255/40/19's for the front as well.
Again, this is what the M5 uses for it's stock setup. Here are the specs I'll be running:
This is going to look so aggressive! w00t.
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PAST 2007 Black Sapphire E90 335i, 2010 Jerez Black E92 M3, 2012 Mineral White E92 M3, 2013 Singapore Grey F10 M5, 2016 Azurite Black F80 M3,
CURRENT 2017 Oxford White GT350