Took my gxp for about 150 mile drive yesterday. It seems while driving on the highway if I hit a bump or pothole the back end will kind of kick. It just seems strange that it would be normal for a car like this to do this. Its never an issue where I actually need to countersteer but kinda makes your heart jump if your not paying attention and hit a pothole. I noticed it the most when I would be changing lanes. Is this normal or should I take it in and get it checked out? I've only had the car for two days and already somewhat suspicious.