Larry Hamm wrote:

> The speedo cable is turned by the left front wheel. With stock wheels
> and tires, a particular number of wheel revolutions will produce a
> certain speed indication. Since a larger tire has a larger
> circumference, it has to travel farther to produce a revolution. The
> same number of revolutions as before, but now the van is covering more
> ground per revolution. Therefore, the actual speed will be higher than
> the indicated speed. Does that help?
> Larry

Yep, it helps. I were thinking about stock tires, I should now, as I am
mounting bigger tires soon, myself. I guess it was late (or early?) when I
wrote it.

PerL