5 series general wheel fitment information

E28 5 series
PCD 5/120, centre bore 72.5mm
wheel bolts M12x1.5, 60 degree tapered head, thread length appr 27mm
Offsets ET 18-25

E34 including M5
Offsets ET 13-20
else as above

E39 including M5
CENTRE BORE 74.0mm
Offsets ET 15-25
else as above
E39 standard wheel arch will be fine with a 9.5x19 rear carrying a 275/30/19 tyre if offset is ET25 or slightly more.

E60 including M5
PCD 5/120, centre bore 72.5mm
wheel bolts as above
Offsets ET 12-32

E61
as above and generally the same offsets BUT to use BMW 9x19 or 9.5x19 ET32 wheels, you need to run 5mm spacers to clear inner arch

Both E60 and E61 will take a 10x20 ET20 with either 275.30.20 or 285.25.20 without catching