I just last week had to remove wheel locks without the key. I tried a wheel lock removal kit I ordered on Amazon, but it didn’t work. Turned out all I had to do was hammer a 12 point socket onto the wheel lock and crank on it with a breaker bar. Wish I had started with the 12 point socket… would’ve saved myself a bit of money and at least a hour of frustration. The socket I used for this survived undamaged btw, so, that was nice.
I’d contact the previous owner cause he’s the only guy who knows what wheel lock and lug nuts that he used. The actual lock nut might be laying around his garage, toolbox, his room or in his other car.