We run 225/45 x15 Hoosiers on the car. We tried a set of Toyo's thinking that the grip would be less, and it was. The chatter remained until we lowered the tire pressure so much that the car pushed through the turns. That reduced the chatter because I was compensating for the push. I'm not sure what the camber settings are OPM handles the car preparation.

Our current thought is the limited slip diff is too tight and needs to be loosened up. Anyone else had chatter problems related to the diff?