On Thu, 05 Feb 2015 20:36:51 -0500, Bob Engelhardt
wrote:

On 2/5/2015 6:09 PM, wrote:
On Thu, 05 Feb 2015 08:49:24 -0500, Bob Engelhardt
...
I don't think that wheel weights are hard (why would they be?).

They are. They are generally 0.5% antimony and 0.25% arsenic - the
rest being lead - and they are heat treated for hardness.

Do you know why they need to be hard?
So they stay tight against the rim and don't bend under centrifugal
force. at 1000 RPM on a 15 inch rim, a 1 oz weight weighs 13 1/4 lbs,
before it hits a bump.