Didn't mean to confuse ya Denny, old chassis guy stuff. After the car launches, the tires break loose... Could be many reasons for this... My first thought would be the chassis is for some reason unloading the tires,,,,,could be due to chassis flex, lack of movement on the rear at launch then when the front end settles down the tires get loose... Anyway, is this car on coilovers or leaf springs in the back????