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      12-06-2019, 01:42 PM   #198
Obioban
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Drives: M3, M3, M5, M5
Join Date: Apr 2008
Location: West Chester, PA

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Garage List
2008 BMW M5  [0.00]
2017 BMW i3  [0.00]
2005 BMW M3 Coupe  [0.00]
2001 BMW M5  [0.00]
Chaning things up for this winter. 25 lbs stiffer on each front spring, stiffer front sway, will have a rear sway again.

Setup:
350 front left
325 front right
700 rear left
628 rear right

Ground Control 7 gauge race front sway
CSL rear sway with some adjustable end links I made myself

Puts me at 1.89hz front, 2.07hz rear, so 1.1 bounce ratio (10% flat ride).

Depending on where I set the sway adjustment I can set the front roll couple to be pretty much anywhere in the 70-80% range-- going to start it in the middle and dial it in by taste.

Front roll stiffness is ~double stock (over/under depending on where I end up setting the sway), rear roll stiffness is ~50% more than stock.

I really enjoyed using flat ride in 2019, but the rear end feels slightly off without a sway. I'm hopeful this new setup will be bang on perfect.

If it is, next winter I'll have the Ohlins rebuilt/revalved for my specific corner weights/spring rates. They're coming due for a rebuild anyway, and my corner weights are pretty finalized (not much significant weight left to take off the car).
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2005 M3 Coupe, 2004 M3 Wagon, 2001 M5 Sedan, 2008 M5 6MT Sedan, 2012 128i M sport
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