i have 18 inch tires and wheels on my car teh setup in the back is 235/45 18x9.5 and the setup in the front is 225/45 18x8 and my traction control is actuing like its on crack, the dealer said that its my setup that is causing this, and that i should move to a 225/40 in the front and this will stop the traction control from going nuts.

any thoughts?

He is correct. You have two different height tires front to rear. It would also effect the anti lock brakes.
If I can help with the tires let me kow.
Thank you