This weekend, I put on the wheel covers:
I'm not really happy with how they turned out. They were made using the cotton-over-snap-in-covers method, and although I had the fabric stretched drum tight, when the resin cured, the tension in the fabric was uneven, resulting in waves and bumps:
I'm going to drive with them for a few tankfuls while I think about other ways to do this. One idea that came to mind was plastic (such as the KwicKan material) riveted to snap-in trim rings.