Just purchased a 2013 prius last week and need some recommendations regarding performance. After a week of driving, I noticed that the steering is a bit loose and not as tight as I would like. Would lowering my car, adding a rear sway bar, or adding bigger tires help in this regard? What brand of lowering springs and sway bar would you guys recommend? I was considering the Toyota OEM, H&R, or Eibach lowering springs. thanks for the help.