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      07-06-2015, 12:05 PM   #23
dcaron9999
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Drives: 2011 135i M package
Join Date: Jan 2010
Location: Mirabel, Quebec

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Quote:
Originally Posted by 02rsxpilot View Post
I talked to TC personally a while back and asked him about spring rates. His first question was if I'd addressed the RSFB, and when I said I had done the inserts, he said without hesitation 350 front, 600 rear.
Good to know. My B8 dampers probably have "inferior" damping specs to TCK SA or DA, but the spring rates you provided offer a ballpark to aim for at least. If Swift and Bilstein support ever respond to my email, I will post their replies here...
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2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts
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