I have been a BMW fan for a few years now and finally got around to posting on this forum. My present car is an E60 545i 2005.
Previous car was an E39 528 1999, loved that car too.
I have done a few mods on my 545i:
19" DTM wheels staggered.
Front Bridgestone Potenzas 245/35/R19
Rear Bridgestone Potenzas 285/30/R19 (285's are a much better fit than the 275's on the DTM wheels)
Lowered within legal specs using B&G springs
Bilstein shocks
Chip tune + by Torque performance
Character of the 'Family' the car has totally changed. I have added a few photos.