What is a common indication of failing upper control arm bushings?

The correct indication of failing upper control arm bushings is uneven tire wear. Control arm bushings are crucial components that allow for controlled movement of the suspension. When these bushings wear out, they can lead to misalignment of the wheel, which causes uneven contact between the tire and the road surface. This uneven contact can lead to excessive wear on the inner or outer edges of the tires, resulting in bald spots and reduced tire lifespan. Early detection of such wear can prevent further suspension damage and improve vehicle handling and safety.

The other indications, while they may stem from different issues within the vehicle's suspension or steering system, do not specifically indicate failing upper control arm bushings. For instance, shuddering during braking typically points to issues with the braking system or wheel alignment, drifting to the side can be indicative of alignment or tire problems, and rough idle is generally related to engine performance rather than suspension or steering components.