Sounds like its normal, more aggressive suspension geometry and bigger wheels with smaller sidewalls will mean the vehicle will tend to follow the imperfections of the road. It sounds like the vehicle is too new to have anything worn out, unless it was damaged.
More comfort oriented tires will probably help combat this tendency.
I'd have the alignment and tire balance checked for good measure, and would also self-check the tire pressure at all four corners. These are easy things to check, and might eliminate the issue quickly and cheaply.