CASTER

Understand caster, a key alignment measurement in Gran Turismo 3: A-Spec, and how it affects handling even though it's not adjustable in-game.

Caster refers to the horizontal movement of the wheel relative to the vertical axis. Imagine viewing a car from the side. Consider the front wheel and the vertical shock absorber behind it. The shock's bottom is attached near the wheel's center, while the top connects to the car's chassis under the hood. If you move the wheel towards the front of the car within the wheel well, the shock will angle, with its bottom positioned further forward than its top. This configuration results in positive caster. The opposite scenario is negative caster.

Since caster cannot be adjusted within Gran Turismo 3: A-Spec, its direct impact on gameplay mechanics is limited. However, it can significantly influence camber (the inward or outward tilt of the wheel when viewed from the front) as you turn the wheels.