Which vehicle components require the most monitoring by the driver?

Correct answer: The tires.

Tires are the only part of the car that touches the ground, and they can develop cuts, deformation, or wear in a short time. That is why they need more attention than other components. Check their pressure when cold about every 15 days, and inspect the tread and sidewalls often. In the image, a driver checks tire pressure at a gas station.

Reglamento General de Vehículos · Manual II. Cuestiones de Seguridad Vial, edición 2026