I had a similar thing happen but at low speed shifting (A/T) to second. My opinon. With a surge of power the drag tires must be matched to handle the power. It is a limited slip rear end but not all the way. Both tires mst be planted with no slip.If the tires are too slippery that's what happens.You don't want to mix the 2. If you run bias ply out back you need to run a skinny up front or the car will sway horribly.