Sadly, a 10mm spacer will not work on the F30 rear. The new hub lip prevents this. A 5mm spacer will work, but is simply not agressive enough to flush the wheel. A 15mm will work as well, but it "might" be too agressive.
I also have OEM 19" wheels (401 style). I actually tried a 10mm "tester" spacer (not hub-centric) for the rear and it looked perfect. I should've have taken a photo. It doesn't matter anyways because no one makes a 10mm that fits an F30 rear hub. The front will take any size just fine.
H&R does make a 13mm for the F30. I'm 95% sure that it will fit on the rear and still clear with no rubbing. But I don't want to be the first one to try it. If you decide to do it, PLEASE post up the result here.