Final answer:
The proper tire inflation specification can be found in the vehicle's owner's manual or on a sticker inside the driver's side door jamb. It's important to measure tire pressure when tires are cold to get an accurate reading, as per the manufacturer's recommendations for safe and efficient driving.
Step-by-step explanation:
The proper tire inflation specification for a vehicle can typically be found in two primary locations. First, the owner's manual will list the recommended air pressure for the tires of that particular model. Secondly, this information is also commonly found on a sticker located inside the driver's side door jamb. This sticker or plate provides the optimal tire pressures for both front and rear tires under normal load conditions. It's important to note that the maximum pressure rating on the sidewall of the tire is not the recommended pressure; it is just the maximum pressure that the tire can handle safely.
Measuring the tire's pressure when it is cold is essential, as driving will cause the air within the tire to warm up and expand, leading to an increase in pressure. Always refer to the vehicle manufacturer's specifications for accurate inflation to ensure a smooth ride, improve gas mileage, and extend the life of the tires.