rear end dance

[turbobuick1035]

Can someone give me some feedback. After about 80 mph or so under 18 plus lbs of boost the rear end sways and dances around and i have to let off.. i can carry it to 100 plus mph but just not under heavy boost. I have some BFG TAs on the rear 275's since I've had the car and want to get the MT on it...Could it be the BFG's doing that. I do have an air bag on the right side but it doesn't matter if I have any in it or not. I know it's mainly for launches. What do you guys think?

 

[URSPANKED]

My GN does exactly the same thing. I have the BFG T/As and several on this board told me that was the problem, something about the belts separating. It's kinda scary, huh?

 

[turbobuick1035]

yeah it gets scary...thanks for the feedback