IS F (2008-2014) Discussion topics related to the IS F model

BCR spring rate

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Old 04-24-10, 06:46 AM
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jaslapp1
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Default BCR spring rate

Hey guys I know there was a thread on this before I tried to find it and couldn't. What spring rate should I go with? I'm looking for better track performance but still a good ride on the street if I soften them up. Thanks.
Old 04-24-10, 07:26 AM
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verals05
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For track use I recommend the KW V3's

On my BCR's I went for 16K and 14K
Old 04-24-10, 10:15 AM
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trackdood
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on my track set up I am using 22k and 18k.. FYI KW COMPETITIONS. if you are tracking your car hardcore otherwise 16k and 14k will work great..
Old 04-24-10, 12:01 PM
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FIGS
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What track rubber are you going to use? That will make a difference also.
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Old 04-24-10, 01:33 PM
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HEWITT
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I am currently using BC racing coilovers for my car and am dissapointed that Circuit motorsports did not notify me about optional spring rates. So anyone who do look into BC coilovers, please research more into it.
Old 04-24-10, 01:42 PM
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verals05
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Originally Posted by HEWITT
I am currently using BC racing coilovers for my car and am dissapointed that Circuit motorsports did not notify me about optional spring rates. So anyone who do look into BC coilovers, please research more into it.
Happened to me to the first round, but with a different dealer...

DAMN did it suck... alot of $$$ and a PITA!!
Old 04-25-10, 07:53 AM
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hwy1isf
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Originally Posted by HEWITT
I am currently using BC racing coilovers for my car and am dissapointed that Circuit motorsports did not notify me about optional spring rates. So anyone who do look into BC coilovers, please research more into it.
What spring rate did CM put on your BCR order and what would you have gone with? I am looking into coilovers for my F also; it is a car that is primarily used as a DD, with occasional track events, so I have additional research to do myself.

Last edited by hwy1isf; 04-25-10 at 07:59 AM.
Old 04-25-10, 06:26 PM
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trackdood
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I have given the input of what spring rate to you on BCR's but i think that 18k and 16k would be better. the car has a high roll point and its heavy. The spring does alot but the valve does more. i think the BCR IS-F set up should be at 18k and 16k for the standard.
Old 04-25-10, 06:26 PM
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Originally Posted by FIGS
What track rubber are you going to use? That will make a difference also.
hankook slicks......
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