This might be above your budget, but I would highly recommend considering it if you can. I sent the guy a PM and linked this thread. It has the Dynamic Handling pkg, which includes Dynamic Damper Control and Active Roll Stabilization. Active Roll Stabilization is a total game changer for the 5er!!! It improves the handling beyond description!! The car is on the east coast. There’s a photo of it in post #7.
He says he’s taken it off the market until the spring.
https://g30.bimmerpost.com/forums/sh....php?t=2138337