I recently relocated to Serrano, El Dorado Hills. I replaced the front Bilsteins with new Sachs struts on my 535. This is with 17" T stars, Eibach springs, RD anti-sway bars, IE fixed camber plates, & Bruno's rear subfrqame inserts. One of those Bilstein struts frooze up on me.

You're welcome to drive the car & question the suspension. I like the sachs struts' compliance when compared to the Bilsteins. The Sachs sporting kit may be the ideal suspension for these cars. At 1 time, I had BavAuto springs on the 535. It was low, & was set for corners, but the impact over coins & shadows on pavement made for a very uncomfortable ride.