What does toe-out-on-turns refer to in steering geometry?

Toe-out-on-turns refers to the positioning of the wheels during a turn, specifically noting how the inside and outside wheels behave in relation to each other. When a vehicle turns, the inside wheel must pivot around a tighter radius compared to the outside wheel. This condition allows the outside wheel to cover a larger turning radius while the inside wheel tracks a smaller circle, which is essential for ensuring that both wheels maintain optimal contact with the road surface during a turn.

In this context, the statement that the inside wheel tracks a much larger circle than the outside wheel outlines the fundamental principle of toe-out-on-turns. As the vehicle steers into a turn, the angles of the wheels adjust slightly to facilitate this behavior, ensuring that the vehicle can handle the turn smoothly. This adjustment is vital for maintaining control and stability, particularly in tight corners.

This concept is crucial for effective steering geometry, allowing for better maneuverability and reducing the likelihood of tire wear or handling issues that can arise if the wheels are not properly aligned during turns.