Mine are both steel and have the holes. Hrmmmm. Thomas, did you check with a magnet to see if they were indeed aluminum?
If I could find two aluminum spares, that would be nice. And Steve, you're absolutely right. These tires came off of a modified Vic with aluminum mini spares and I could hold them up with one finger.
I have not... Most of them are in storage a long ways from home. They were all noticeably lighter than the steel Thunderbird spares I had sitting around also. I could be wrong though.