Greetings from Tanabe Racing Development!

[kenshinS14sks]

Originally Posted by r-b-x

so stiffer springs are more effective at reducing roll compared to softer springs, and so stabilizer bars would have less to do -- can that perhaps even be interpreted as stabilizers being less of a requirement in the presence of stiffer springs? would it be wise then to compensate with even larger diameter stabilizer bars? you say your bars are proven for various spring rates, but their overall effectiveness on handling behaviour must have varied.

and so do you guys have any plans for different size and/or adjustible stabilizers bars?

Originally Posted by TanabeUSA

As the springs become stiffer, they dampen body roll more and more, but require smoother and smoother roads to keep proper tire contact patch and ride quality. The beauty of stabilizers, is that they eliminate body roll without compromising the efficiency of the spring's ability to keep the tire in contact with the road on various surfaces.

i would say that you can only go so stiff before you start sacrificing your ability to keep your tires on the road. so go with a balanced setup of springs/stabilizer bar