There's a silver wheel lock in the trunk, but its too big. The one on the car must be aftermarket or something. It has 16 teeth, unlike the standard 12 spline sockets everyone carries. Seems symmetric. Everything else is 19mm, if that helps. Any ideas?

 

Bring it to a tire shop. I am sure they have ways to crack it.

 

got a replacement from Champion. Thanks guys

 

for future reference. This is a good kit to have around if you have a symmetric spline wheel lock