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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Another BC Racing Coilover Review



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      10-28-2022, 12:39 AM   #45
thormessiah
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Originally Posted by whyzee125 View Post
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Originally Posted by thormessiah View Post
For the guys that went with the Swift springs, what rates did you end up going with? The stock springs the Coilovers can with are 8k/12k and the tide is bouncy and hard at high speeds. I'm trying to find an option that will dampen better for daily driving
8k is really stiff up front and the front to rear ratio is too high which will cause it to pitch a lot.

6k/12k is a good balance as is 5k/15k
Ended up going with 6k/12k soo we'll see how the cat feels when I get it back next week. Out of curiosity what spring rates would 70 n/mm (400 lbs) and 120 n/mm (685 lbs) be? That's the spring rate for an Ohlins Coilovers set specific for high hp E92s.
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      11-03-2022, 11:42 AM   #46
whyzee125
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Originally Posted by thormessiah View Post
Ended up going with 6k/12k soo we'll see how the cat feels when I get it back next week. Out of curiosity what spring rates would 70 n/mm (400 lbs) and 120 n/mm (685 lbs) be? That's the spring rate for an Ohlins Coilovers set specific for high hp E92s.
There are lots of charts you can use to convert, looks like that's roughly 7k/12k
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