Eibach springs do not lower a csl they actually raise it about 10mm !!!
as they are based on std m3 dimensions and spring rates
Fitted PI springs from bm town they said they gave a 30mm drop all round .
dropped the rear 5mm and the front 15mm .
Ride qualty poor on the road and less feel on track
After a lot of hassle TBH wish I'd left it std or done the proper thing and fitted coilovers
mick
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