AFAIK, F87 M2 OEM stock ride height (OEM suspension, wheels, tires, tire-pressure and of course without shipping blocks):
- front wheels: 612mm ("series") and 622mm ("bad-road package") (see here);
- rear wheels: 615mm ("series" + "bad-road package") (see here).
F87 M2 M Performance coilover suspension ride height:
- front wheels: 574mm (18") and 595mm (19"), with bump travel extended by 10mm (see here, pages 6 and 15);
- rear wheels: 579mm (18") and 600mm (19"), with bump travel extended by 10mm (see here, pages 7 and 16).
The height of M2 and M2C are identical (1410mm), but the ground clearance differs (123mm for the M2 versus 118mm for the M2C = 5mm difference).
About ground clearance: compare the minor design differences between M2 and M2C below:
M2:
M2 Competition:
