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      12-25-2017, 09:59 AM   #1
E30ROB
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Exclamation 128i PSS9 + 60MM linear springs

I havent hit the track yet but I will In the next year or so and I want my 128i to be setup just right. Maybe you guys can help.

Here is my current suspension/brake setup for best recommendations:
PSS9 coilovers
Solid rear subframe bushings
M3 control arms F&R
GC street plates (will install once I acquire Springs)
F30 BBK

My thoughts:
I was thinking
Front - 350lb 7”
Rear - 500 6”

The car will driven on the street, but I’m building this to destroy on the track and be somewhat tolerable on the street.

Thoughts and suggestions?

Thanks in advance!
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      12-29-2017, 08:53 PM   #2
John_01
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You should be able to keep the PSS9 springs for your intended usage without any issues.

Later if you want to increase the spring rates for track use, you will want higher than 500lb spring rate on the rear. That's my suggestion to get balanced handling with less understeer.
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