Simon Brooke wrote:

Take a radial and a three cross and bounce 'em off the workshop floor,
and you'll see what I mean.

If you do that with tires on and inflated, I predict any
difference you see will be due to the tires (Try 20psi vs 100psi
to see an exaggerated example).

If you do that without a tire on the rim, I predict you will
hear a loud clang and learn nothing about the properties of
the wheel lacing.

Ben
I'm pretty certain about the loud clang