Steering offset (also known as scrub radius) is the distance between the centre of the tyre contact patch and the point where the steering axis hits the ground.

A car with zero steering offset is said to have centre point steering.

If the steering axis hits the ground to the inside the tyre centre line, the car has positive steering offset or positive offset.

Alternatively, the steering axis can hit the ground to the outside of the tyre centre line. This is known as negative steering offset or just negative offset.