I have got my Antera 309's on my 750il and like them very much. Still not used to looking at the solid star design after being used to the M Pars.
The fronts are 245-45-18(8.5") and the rears are 275-35-18(10").
The ride has certainly firmed up and the car feels flatter on the road.
Heres a new picture on the right with the UUC Springs in comparison with the stock ones!






I now find it easier to clean my brakes!