Welcome to WAL :standing wave:
I personally am not a fan of buying used tires, but I know many have with success.
Do you know what backspacing the wheels have? You will need =/< 4.75".
Also, check to see if the wheel will clear the brakes and tie rod ends. Not all 15" wheels will work on a JK.
Wrong bolt pattern, that looks like it's 5x4.5
Jk is 5x5