The 06s are going to be a bit worse in the winter. Their benefit is in the sidewall. the DWSs, while great in snow and ultimate grip, had a horribly soft sidewall that left many people with a bad taste in their mouth. Really change the handling of a car.
The 06 was an attempt to improve the sidewall/steering response/floaty feel, while keeping snow performance as good as they could.
Having owned multiple sets of both, they're certainly an improvement...but if handling matters...still look elsewhere.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs)
'14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat)
'08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat)
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