Final answer:
The tilt of a wheel when viewed from the front of the car is called camber, which is related to the concept of wheel alignment and differs from caster or toe-in.
Step-by-step explanation:
The inward or outward tilt of a wheel and tire when viewed from the front of the car is commonly referred to as camber. When the top of the tire leans towards the car, it is called negative camber; conversely, when it leans away from the car, it's known as positive camber. This is distinct from caster and toe-in, which refer to the angle of the steering pivot when viewed from the side of the vehicle and the direction the tires are pointed relative to the centerline of the vehicle, respectively. Wheel alignment involves adjusting these angles to their proper settings to ensure the vehicle drives straight and to prevent excessive tire wear.
Understanding the relationship between tire rotation and car movement, as detailed in Figure 6.5, is essential in the context of mechanical and automotive engineering. The angular velocity of the tire is directly correlated with the linear velocity of the car, such that a larger angular velocity results in a greater linear velocity, which is a fundamental concept in the study of dynamics within physics.