Start / Terms / Toe Measurement Radius
Enter the toe measurement radius. This is the distance between the center of the wheel and the point at which toe was measured. If you measured at the tire tread, use one-half of the tire diameter, which is the tire radius. If you entered zero toe, it doesn't matter what value you use for this item because measurement at any radius will produce the same toe value of zero.
You can enter your toe measurement by angle or by distance. When you enter one, the other one is automatically calculated and displayed.