Scrub radius is the distance between two imaginary pfints on the road surface: the centerline of the tire using the __ line and where the __ centerline contacts the road surface. Select one: a. Camber; caster b. Caster; camber c. Camber; SAI d. SAI; caster

## Step 1<br />The scrub radius, also known as the "scrub distance", is a term used in automotive engineering to describe the distance between two imaginary points on the road surface. These points are the centerline of the tire using the steering axis (SAI) and where the steering axis centerline contacts the road surface.<br /><br />## Step 2<br />The steering axis (SAI) is the imaginary line that passes through the center of the tire and is perpendicular to the ground. The steering axis centerline is the imaginary line that passes through the center of the steering axis and is perpendicular to the ground.<br /><br />## Step 3<br />The scrub radius is important because it affects the handling and stability of the vehicle. It is the distance that the steering axis moves parallel to the ground when the wheel is turned.<br /><br />## Step 4<br />The scrub radius is not related to the camber or caster of the wheel. The camber is the angle between the wheel's centerline and the ground, while the caster is the angle between the steering axis and the ground.