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      12-06-2019, 04:00 PM   #41
atr_hugo
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Drives: '13 135i
Join Date: Jun 2007
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Quote:
Originally Posted by andrey_gta View Post
Would you discourage people to run these with Swift springs? They have the rates lbs 201/ 503.

Those aren't that much stiffer, IIRC, than the MSport springs. I ran a set of the Special Active predecessors (FSDs) on an '08 135i MSport and they worked. I wouldn't want them on a car that I was going to do track days with though. I'd opt for Bilstein B8s in that case . . . YMMV, of course ; -)

Here's an old thread that some folks much wiser than I commented on: https://www.1addicts.com/forums/show...tr_hugo&page=3

Last edited by atr_hugo; 12-06-2019 at 04:07 PM.. Reason: Updated to include thread that explains natural frequency
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