Not yet, car still feels pretty good. Big difference is running at the track versus the street is wheel hop. With DR's after a burnout you shouldn't get any at launch. On the street with any tires and poor traction you will get plenty. That extra vibration can cause lots of problems. I drive like a grandpa on the street. I have warranty left until Feb 2010, and plan on taking it in for the once over before it's up. Just remember the stealership has problems locating parts and you might be without your car for a while.

If you can jack your car up on one side you will be able to see the rubber around the bearing towards the back under the gas tank area. Should be easy to tell if it's tore or showing signs of cracking.