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      04-17-2024, 01:40 AM   #8
M3SQRD
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Drives: E92 M3,G20 330ix,F22 240iX,F82
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Location: Mid-Atlantic

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Quote:
Originally Posted by b7ff View Post
Thanks for the input, appreciate it. Those numbers you quote does makes sense a lot more; I guess I need to order new sets of springs then. How about helper springs though - does the rate on helper springs matter and given its a divorced-rear so this will only stand for the front i guess?
A helper spring has a very low spring rate and its job is to keep the main spring seated at full droop (max rebound travel). The spring rate is around 10 lbf/in.

You may not need a helper spring in the front for spring rates < 400 lbf/in. A helper spring could still be used but it would be fully compressed at full droop which defeats the purpose of a helper spring.

For the typical range of spring rates used on the rear, a helper spring is not needed because the main spring remains seated at full droop.

Definitely reach out to Inertia Lab because they are the preferred Nitron dealer in the US. He can get you everything you need, including the ideal spring rates for your needs.
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