Project complete.
Recap of what was upgraded:
Ohlins DFV Coilovers with Swift springs (400#F/800#R)
E90 M3 link, bushing, and roll bar upgrade
Ground Control camber plates
APEX ARC-8 wheels (18x9.5, 18x8.5)
Nitto NT-01 R-comps (275/35/18R, 235/40/18F)
Results:
It's about an inch lower all around. Aligned and corner balanced. Overall weight = 3350lbs. Front camber = -2.3 degrees. Front total toe = 1/16" in. Rear camber = -1.9 degrees. Rear total toe = 3/16" in. I haven't had a chance to really push it to determine how the balance feels, but it is remarkably docile on the street for such stiff spring rates. I think this ride frequency will work out well.
Big thanks to Harold from HPA, Joey from Ohlins, Eddy from Apex, and Jay from Ground Control for their help while planning this upgrade. There are a lot of coilover kits out there for the 135i but many of them don't really seem too well engineered. It was through the help of these guys that I was able to wade through the info and make sense of it all.
