214's & 132's

[Rik]

I now have an E70 with 20 inch wheels (214's) and also a nearly new spare set of 19 inch 132's from my E53.
What are the chances of increasing the centre bore of the 132's to match that of the 214's ? (approx 1.5mm extra diameter needed) As far as I can tell there are no other problems assuming the PCDs are the same.
Would I be able to use the 132's as a spare set or can anyone think of any likely problems ?

214 11 x 20 315/35/20 ET 37
214 10 x 20 285/40/20 ET 40

132 10 x 19 285/45/19 ET 45
132 9 x 19 255/50/19 ET 48

Thanks