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Some info on the kit

They tested the ACS DFC and the KW variant III, which is not for sale yet. It is being introduced at the Essen Tuning Show at the end of November. Price for the ACS DFC is 7779 DEM, the KW variant III is at 4084 DEM, fitting not included !

The M5's were tested on the Nürburgring, the quickest M5 was the one with the ACS DFC suspension on board. They measured the Km/h through some sections of the Nürburgring, here are the numbers:

Quiddelbacher Höhe
M5 serie => 164,5
M5 with KW => 172,1
M5 with ACS DFC SPORT => 168,2
M5 with ACS DFC INTERMEDIATE => 175,4
M5 with ACS DFC RACE TRACK => 181,0

Schwedenkreuz
M5 serie => 167,7
M5 with KW => 169,8
M5 with ACS DFC SPORT => 170,7
M5 with ACS DFC INTERMEDIATE => 173,1
M5 with ACS DFC RACE TRACK => 184,9

Aremberg
M5 serie => 90,9
M5 with KW => 92,5
M5 with ACS DFC SPORT => 91,6
M5 with ACS DFC INTERMEDIATE => 93,6
M5 with ACS DFC RACE TRACK => 96,2

Wehrseifen
M5 serie => 101,3
M5 with KW => 114,2
M5 with ACS DFC SPORT => 112,3
M5 with ACS DFC INTERMEDIATE => 115,6
M5 with ACS DFC RACE TRACK => 114,3

Eiskurve
M5 serie => 89,2
M5 with KW => 98,3
M5 with ACS DFC SPORT => 98,8
M5 with ACS DFC INTERMEDIATE => 100,4
M5 with ACS DFC RACE TRACK => 100,1

Then they took the comfort in account !
M5 serie => good
M5 with KW => satisfying
M5 with ACS DFC SPORT => satisfying
M5 with ACS DFC INTERMEDIATE => satisfying
M5 with ACS DFC RACE TRACK => not so good
short bumps
M5 serie => very good
M5 with KW => satisfying
M5 with ACS DFC SPORT => satisfying
M5 with ACS DFC INTERMEDIATE => not so good
M5 with ACS DFC RACE TRACK => not so good
long bumps
M5 serie => good
M5 with KW => good
M5 with ACS DFC SPORT => not so good
M5 with ACS DFC INTERMEDIATE => satisfying
M5 with ACS DFC RACE TRACK => satifying

Taking everything into account.... here is the "final verdict"......

The M5 with the ACS DFC Suspension is unbeatable on the Ring when in "Race track" mode ! The OEM M5 suspension is sure and comfortable, but not really suited for the race track. The best compromise for "every day use" is the KW Variant III !!!
 
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