Final answer:
The low air pressure warning typically activates at approximately30 psi. Maintaining the recommended tire pressure is important for vehicle safety and efficiency.
Step-by-step explanation:
The low air pressure warning in vehicles is designed to alert the driver when the tire pressure falls below a certain threshold. This warning typically activates at approximately 30 psi, which is option 2
Maintaining proper air pressure is crucial for a smoother and safer ride, better gas mileage, and less tire wear. The recommended pressure is often specified in the owner's manual and usually falls between 32-35 psi.
It's essential to note that the air pressure in tires should ideally be measured when the tires are cold, as heat from driving can temporarily increase the pressure.