1) Got new tires at tire barn 6 months ago
2) drove away happy
3) need to swap rims out for my slicks
4) tire barn has my wheel lock
5) WHAT the heck do I do?
find a socket that almost fits over the lock and hammer it onto the lock. you might have to get a few extra sockets and new locks but they will come off.
Are they FORD locks? If so, your local dealer should have a master set of keys and should take them off for you. My local dealer has done it twice for me, no charge. Otherwise, the socket trick will most likely work. If you use a Craftsman socket, take it back to Sears and get a new one.
If you don't care about saving the locks, weld a bead across opposite sides of the lock and then turn them off with some vice grips (real ones, not cheapies).