Hello -
The wheel covers are pretty sturdy after a week :
Wheel Cover Report I
To solve the "small valve stem access hole" problem I made a "magnetic" valve stem cover out of a valve stem that can be removed with a 3/8 socket. The socket is metal and the valve stem cover is magnetic, so it stays in the socket after I unscrew it.
I will be making the "donut version" next for the rear wheel.
CarloSW2