Car keeps steering without me?

When I make a hard turn, for example, into a parking spot, my steering wheel continues to turn by itself all the way in the direction I was going (no hands!). I know that the tires have not been great lately and I should probably replace them, so I hope that’s it, but I wanted to see if anyone knew more before I started spending all of my money on it. THANKS!

Your steering rack, specifically the spool valve portion of it, is malfunctioning. You need a new rack assembly.

replace the front tires too