^ You might want to talk to Ohlins about using rear springs that are 250-300 lbs stiffer than what their rear shocks were valved to dampen. There's a thread somewhere in this forum where someone mentioned a conversation with an Ohlins rep who stated they'd recommend revalving the rear shocks if increasing the rear spring rate significantly.
Love riding Moab slickrock btw
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, KW/M3 susp, Apex Arc 8, Mich PSS