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      07-15-2012, 05:02 PM   #37
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doughboy's Avatar
United Kingdom

Drives: E91 335i Sold.
Join Date: Jan 2009
Location: UK

iTrader: (2)

Very nice paul, looks good.

The birds B3 suspension kit (Bilstein B6 based?) is run without any bumps stops at the express instruction of Birds and the kit designer (bmw call them 'addtional dampers').

Both those springs in the pictures are look linear rate to me as the coils are uniform and equal, it is also impossible to tell by looking at the spring off the car how it will sit.

A longer spring of a lower rate will sit lower for example (like birds rear tourer spring is longer than standard but a lower rate, so its sits lower).

Conversely a shorter spring of a higher rate (like the eibach fronts are) could well sit higher than standard if the vehicle weight has not been calculated properly (i.e. light engined models).
335i gone E63 AMG here at last!

Last edited by doughboy; 07-16-2012 at 04:30 AM.