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Join Date: Jan 2014
Location: Seattle, WA
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OEM Sway Bar options?
I'm looking to upgrade the sways on my E60 M5.
It appears the best options are the RD Sways, but they are both expensive, and have a somewhat iffy quality reputation.
As far as I can tell, the RD sways offer the following stiffness increases:
Front: +13%, +29%, +45%
Rear: +40%, +68%, +119%
I hear most people run the fronts in the middle and the rears full stiff or middle stiff.
The front M5 sway is 26.5mm and the rear is 18mm. Thus, to hit +29% and +119% would need a 28.25mm front and a 21.9mm rear.
I'm thinking of going with the M6 front bar which is 28mm, and the Dinan rear which is 21mm. This should give me +25% in the front and +85% in the rear. I could go +43% in the front also via the M6 competition package bar.
Anyone tried anything like this?