Originally Posted by Auto-X-ZTS
Swaybars increase in stiffness to the 4th power of diameter--There is no reason that I can come up with that suggests that it is good to setup a Focus with a RSB that is over 200% stiffer than an SVT one (21mm). If that is what you need to get your car to 'handle', then perhaps you should really re-evaluate the spring and damper setup being used. A sway bar *should* be a tuning device--like the frosting on the cake...not as the "batter" of the recipe. By their very nature, big sways also reduce the independence on the suspension--how is that good? That goes for any car. It goes doubly for the Focus because of the rear LCA issue...reinforced or not. The amount of leverage generated by the 28mm RSB is well beyond the scope of design for that LCA.
A 25mm is plenty big--and a 28mm is 57% stiffer than that.
Have you driven any of the cars with the steeda 28.6 rear bar? Or are you basing this on only your opinion and no experience?
If the SVT LCA's are not bending or breaking, then the bar is obviously not beyond the design capacity.
As you said the sway bars are a tuning device, so why couldnt this sway bar compliment the driving style of those who are using it?