ron,

I originally thought the centerbore was the issue when putting it on, although I noticed at the time that the center cap was being pushed out simultaneously. I now think that the problem may be the hub protrusion from the mounting face. I think that the wheel is not deep enough. I don't know how to explain this, but it's not simply a center cap issue. The center bore doesn't go all the way through - there's about 1/4" of the face of the wheel remaining at the front of the bore with the spoke pattern extending over it. Then, there's a second bore going all the way through with the center cap over that. The center cap is only about 2" (50mm) in diameter. So to fix the problem, I think I might have to extend the bore out to the face of the wheel, and possibly ruin the design of the wheels. I don't want to do that if I don't have to. Again, I have to take measurements to figure it all out. I didn't try much last time because I thought the bore was the issue. Thanks again for the insight! You've been a big help on this!