Both the conditions are risky, especially when you are driving on a busy street or a road full of curves. It could be a problem with suspension components if you feel the wheels are loose or not holding up tightly while making a turn. However, bad wheel alignment is the culprit in most cases. Similarly, the same thing could be the reason of hard steering.
The wheel alignment cause a vibration when it's off balance. It mostly happens when the car hits a pot hole or bumps into something and knocks out the wheels of their position. However, the shaking could be the repercussion of many other serious problems such as warped brake rotors, damaged suspension components, and misaligned tires.
Bad alignment noise will warn you about displaced wheels. So, you should pay attention when your vehicle is making creaking, knocking, or squeaking sound. Although issues with suspension and loose or damaged components can be the reasons of strange noises coming underneath a vehicle, bad wheel alignment could be another potential cause.