Improving Fuel Efficiency with Tire Pressure Adjustment

Inflating tires to 40 psi improves fuel efficiency and prevents tire damage, as explained by automotive diagnostic evaluator Nambaksa.

### The Importance of Maintaining Tire Pressure at 40 PSI for Fuel Efficiency
* ⛽ Maintaining tire pressure at **40 psi** can lead to improvements in **fuel efficiency**.
* 🚗 Tire pressure is commonly measured in **psi in Korea**, and for passenger cars, it's generally recommended to inflate the tires to around **35 to 40 psi**.
* 📚 "If the area touching the ground is wider, the fuel efficiency gets worse. As the space narrows, **fuel efficiency improves**."
* 📅 It's recommended to check and fill the tires with air **every six months or once a year**, as air pressure changes over time.
* 🚨 Many vehicle tire pressure sensors operate at **30 psi**, and the pressure can rapidly decrease **below this level** due to temperature changes.
* 🌞 "In the summer, you can put in around **30**, and in the winter, around **35**. But for those who don't check the air pressure often or don't go to the car center frequently, make sure to put in **40**."
* 🔧 "Usually, these days, if you go to a car center, many of them will ask you to **inflate the tires yourself**."
* 👨 Dr. Nampark recommends maintaining the tire pressure at **40 psi for passenger cars** to improve fuel efficiency.

With a 5-minute investment, you can improve fuel efficiency. Let's take a look. Hello, viewers of Jwajinpyeong TV. I'm Nambaksa, an automotive diagnostic evaluator. Today, as a mechanic, I will explain why I drive with tire pressure at 40. Let me explain the details. When you look at the tire, you can see that it shows 50 psi. This is the unit of pressure commonly used in Korea. Unlike the US and other countries where measurements are done differently, in Korea, we measure in psi. For domestic cars like Hyundai and Kia, the values are displayed in psi. So, if a sensor shows 40, you should consider it as 40 psi. In other words, the tire can withstand up to 50. It's not recommended to exceed 50, but it doesn't mean you should inflate it to 50. Normally, for a passenger car, you would inflate it to around 35 to 40 psi.

There is a standard car manual available, and usually, people put in around 35. It's often recommended between 30 to 35. If you ask me why I put in 40, the reason for that is because now I will briefly explain. So, why do I put in 40? If you think like this, first of all, it's about fuel efficiency. When we think about fuel efficiency, when the car is rolling, there are wide and narrow widths. If we think about tires, are wider tires more fuel-efficient or narrower tires more fuel-efficient? It's easier. For those from the liberal arts background, it might be a bit challenging to understand, but for those from the science background, you will get it. If the area touching the ground is wider, the fuel efficiency gets worse. What does that mean? When there is less wind resistance, the area touching the ground becomes wider, and when there is more wind resistance, the area touching the ground becomes narrower. So, based on the wheels of the vehicle, the area touching the ground.

As the space narrows, fuel efficiency improves. Of course, I'm not saying that having that will lead to a significant improvement in fuel efficiency, but there is definitely an improvement effect. However, it doesn't mean you should always inflate it to the maximum. It shouldn't exceed 50, as you saw earlier. Usually, manuals recommend between 30 and 35, with a maximum of not exceeding 40. I follow the maximum standard of 40. The first reason is for fuel efficiency. Secondly, why do we check tire pressure? How many times a year do you check tire pressure? In my case, as a mechanic, I check tire pressure frequently, but for the general public, how often do you check tire pressure based on the standard of having a regular job? Typically, once every 6 months or once a year, right? So, if you haven't inflated the tires for a year, the tire...

Does air pressure change or not change? It changes. Even if the tire does not go flat, the air in the tire changes. Therefore, if you don't fill it up for a year, if you didn't fill it up for a year, it will drop below 30. Then, it will not only affect fuel efficiency but also damage the car tires. So, every six months or once a year, it's good to put air in. Of course, for those who check the air pressure frequently, you can put it between 30 and 35. In the summer, you can put in around 30, and in the winter, around 35. But for those who don't check the air pressure often or don't go to the car center frequently, make sure to put in 40. In cases where you don't go often, it's better to put in more air. This is the second part. Now, for the third part, there are sensor types. Nowadays, there are many sensor types in vehicles. Sensor types usually operate at 30 psi.

In the case of current cars, yes, that's right. Normally, 35 psi, usually 32-33. Those who don't put more than 35 psi usually drive like that. When winter comes and the weather gets colder, if you open the door in the morning and get in the car, the first thing you hear is ding dong ding dong ding dong. What sound is that? It's the sound of the tire pressure warning. So, it seems like the tire is flat. Therefore, if you go to a car center, they will tell you that it's not flat, the wheels are the same. Why is it making noise then? It's because the air pressure inside the tire changes due to the weather, due to the temperature changes. So, the tire pressure decreases below 30 in no time, it can drop rapidly depending on the weather. So, in this case, you must put in 40 psi. If you don't put in 40 psi, the warning light keeps coming on. That's why you have to put in 40 psi, the reason being the third one. Of course, you can change it in the summer or in the winter.

It's possible, but I don't usually go by standards, so in my case, I don't often inflate it. So, I say that I go around with 40. And in the case of passenger cars, I think it's better to always put in 40. Regardless of the weather, because there is weight. I know that some people may not agree with this, so you should check the air pressure often. Adjust it accordingly. Then, I'll inflate it. Usually, these days, if you go to a car center, many of them will ask you to inflate the tires yourself. Turn it on, and measure it like 40, 4, 10. Hold the line like this, attach it to the tire, and push it in. Nowadays, it's all automatic. It goes in by itself. When you hear this sound, you can stop.

Here, if you look at the remaining three wheels, you can see that I drive based on 40. And in reality, there is an improvement in fuel efficiency for small cars. So, I explained the reason why my mechanic inflates the tire pressure to 40 like this. Please check all the wheels. Thank you. Today, we need to look at the tire part to improve fuel efficiency, the first method is to adjust the tire pressure to 40. I have explained it. Next time, I will come back with another interesting and beneficial topic for you. So far, it was Car Diagnostician TV, Diagnostician Dr. Nampark. Thank you. Goodbye.

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The Impact of Tire Pressure on Fuel Efficiency

Maintaining the right tire pressure, around 35 to 40 psi, is crucial for fuel efficiency in passenger cars.

In Korea, where psi is the standard unit of measurement for tire pressure in domestic cars like Hyundai and Kia, keeping the tire pressure at 40 psi can help reduce wind resistance and improve fuel efficiency.

Wider tires can decrease fuel efficiency, making it important to find the right balance in tire pressure for optimal performance.

Narrower space can improve fuel efficiency, but it's not necessary to inflate to the maximum.

Tire pressure should ideally be between 30 and 35, not exceeding 40, with the frequency of checks being every 6 months to a year.

Failing to maintain the proper tire pressure can not only affect fuel efficiency but also damage the tires, especially for vehicles with sensor types that usually operate at 30 psi.

Maintaining the correct tire pressure, around 35 psi, is crucial for avoiding the warning signal due to fluctuating temperatures.

In colder weather, the air pressure inside the tire decreases rapidly, causing the warning light to come on, requiring the pressure to be increased to 40 psi.

It is suggested to regularly check and adjust the tire pressure to ensure optimal performance, despite the recommendation to keep it at 40 psi for passenger cars.

Inflating tires to 40 improves fuel efficiency, which is why the mechanic recommends it.

Maintaining the correct tire pressure can significantly impact the car's fuel economy.

Car Diagnostician TV promises to discuss more beneficial car topics in the future.