I have a 2007 GT3 with Michelin Pilot Sports(not the Cups), and it seems much more prone tothe back end breaking losethan any other Porsche I have owned(including a 1986 Turbo). I've heard that the 996 GT3s needed to have a track alignment tomake themmore stable, and I was wondering if that would help my 997 GT3. Also, will the Cup tires make that much of a difference? Basically - can I adjust the car to make it more stable, or is it just that much moredifficult to drivethan any other Porsche?

 

You can change the alignment up to handle better, just expect to eat through tires a little faster. More than likely you need to add a little toe out in the rear to help settle that down.