Originally Posted by Mr. 5
The reason why I asked at first was because I thought the M3 front bar was the same diameter and there was no difference.
Now, I realize that the M3 front bar doesn't taper in the middle making it a bit stronger and more stiff.
I just wish the rear sway was as easy to replace as the front because I would love to try out different bars to see what works for myself.
I'm loving the M sport rear but I have a feeling that by replacing the front with the M3 bar will just create more understeer.
Yes, when you increase the roll stiffness the vehicle should understeer more. However, in some cases the increase in roll stiffness actually reduce the body roll induced camber change and keep the more of the tire's contact patch on the ground, understeer is reduced.