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

Drives: 2016 M6 Gran Coupe LCI
Join Date: Jan 2009
Location: UK - Midlands

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).
E90 330i 6MT gone. E91 335i 6MT gone. AMG E63 Estate gone. M6GC current...

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