Another thought as far as the wives, daughters, and kids are concerned--make sure they call someone first or get highway patrol enroute to provide a degree of security. Even if they can do the change themselves, there is a window of vunerability and their time and location needs to be immediately noted and monitored...FHP will usually get a trooper on the scene right away, but they are loathe muss their uniforms.

Make sure when demonstrating a change, to break the nuts (how else do I describe this?) free before taking the load off the tire.

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