^ 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
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS