What is worn out when the car pulls to one side or the other? on 1998 Mercedes-Benz SL500

When I hit a light bump the car will start slightly pulling to one side or the other or does it just need alignment?

Asked by for the 1998 Mercedes-Benz SL500
have the front end and the tires checked to see if you have any worn components
Thanks I was just trying to avoid the delership
2 more answers , 3 more comments
Don't necessarily need the dealership , just a competent & equipped alignment shop. Somewhat difficult to test drive it online.
I live in a small town and it's a 100 miles to the nearest one
That does kinda suck.
I don't have an answer but mine feels like the back tire pulls or gets stuck its weird!