Mine has 160 miles on it and is experiencing the exact same thing.
The slight pull/drift to the right when I drive becomes magnified when I brake hard at a stop, then the steering wheel turns almost 45 degrees in my hands, with some force. That doesn't sound like tire pressure, does it? It sounds like alignment. Or I am wondering if the ESP maybe has a quirk.

I was in to the dealer yesterday on the "routine" radiator hose position change (they called ME) and I told them about it, but the tech said "get some miles on the vehicle first." I didn't think alignment was something that needed breaking in.