Hello. I have a question about my car. Its a '17 HellCat Challenger with 7700 miles. Car has new factory OEM size Pirelli's. I just came back from a drive and noticed the rear of the car was doing some crazy stuff. It almost feels like the car has a "locker" rearend in it. Depending on the speed, gear or left/right turn and slightly accelerate, then shift, the ass-end of the car has movement like its shifting from side to side at times or moves towards switching into another lane without notice! WTF! No way in hell is that normal, so I have something going on back there. I didn't notice it on the test drive or the drive home when I purchased it last week. Nothing on the car appears to show any signs of accident, damage history and the drive-train or rear-end doesn't make any noises, etc. Your thoughts?