When should a car tire be replaced? When we should not turn on the AC?

Below is the information you should know if you are a car owner!

My car has not even traveled 40 thousand kilometers. How can you change its tire by then? asked Niharika, the owner of the car, frantically to the car showroom mechanic.

Your question is fair madam. But those are four-year-old tires. So the mechanic said they should be replaced.

It was raining while traveling in the car yesterday. Then I tried to turn on the AC in the car. Immediately my friend stopped me from doing so. Today the mechanic says he needs to change the car tire.

Niharika came out of the showroom questioning whether she actually knew a lot about the car. Like her, many car owners do not know important things about it.

With this in mind, BBC spoke to Satya Gopal, who has 15 years of experience in the field of automobile engineering, and gather some details for us.

Tires should be replaced every three or four years whether we use the car or not. This can prevent tire bursting and accidents.

Suppose we are traveling 10 or 20 kilometers by car. Then the air pressure in the tire will increase to 30-35 PSI. If the tires are three or four years old then they can't handle that air pressure like new tires. We cannot even assume this.

But when the car travels at a speed of more than 80 kmph, the tires are likely to explode. Old tires can be the cause of such tire bursts.

A triangular hazard button is commonly fitted on all cars. The emergency button should only be used in critical situations such as accidents and when stopping the car on the side of the road for a puncture.

But many people use it even when parking at road junctions. This may diminish its importance.

When the hazard button is pressed, the four lights on it will light up and flash. Those who see this will know that you are in some dangerous situation. Therefore, the emergency button should be used only at critical times.

The airbag in a car is considered a secondary safety system. Seat belts are the first line of defense for car occupants.

Most of us fall on the steering wheel when there is an accident. If the airbag is open then it is equivalent to a bomb. This means additional risk to passengers.

That is, if we wear seat belts, we will be pulled backward in an accident. Then even if the airbag is open, we will lean on the seat. After that, the airbag system will open and save our life.

Perfumes contain a small amount of alcohol. During the journey, the oxygen level inside the car is slightly less.

In that case, if the alcohol present in the perfume reacts with oxygen, people with respiratory problems are likely to have health problems when they travel in the car.

Also, since the car is designed with various electronic devices, in case of any fire, perfumes can make the situation worse. So it is better to avoid using perfume in the car.

The weather changes suddenly when it rains in winter. At times like this, fog is formed due to the temperature difference between the inside and outside of the car.

The AC should be turned on for a while to clear the fog on the car windows quickly. Keeping the car windows open a few inches during winter driving can prevent them from fogging up.

When the car is parked in the sunlight, the heat inside the car increases. If you keep the left door at the front of the car and the right door at the back of the car open for a while, the heat inside the car will go away.

Before driving the car for a long distance, drive the car for at least half a kilometer with the windows wide open. Meanwhile, the heat is removed by running the blower.

After that, you can feel the coolness by turning on the AC. The correct practice is to leave the AC running for some time after turning on the blower.

If the car has traveled more than 50 km, it should not be stopped immediately. The engine should be stopped after running for two or three minutes once the car is parked. Because of the temperature inside the car at that time, devices such as the turbocharger cannot return to normal immediately.

It is therefore advisable to stop the engine after a few minutes to give these devices time to return to normal.

Many bikers turn off the engine when traveling on downhill roads in order to save petrol. But don't do this in a car.

If you drive the car in neutral on slippery roads, you will lose all control.

It is wrong to do this no matter how experienced you are in driving a car. Note that the reason is that braking also occurs automatically when changing gears.

This arrangement between gear and brake keeps the car in control no matter what road it travels on. Conversely, driving the car in neutral can cause the brakes to fail and cause an accident.

It is worth noting that the height of the car varies slightly depending on the number of passengers traveling in the car. Although we don't have to consider this subtle matter seriously, there is also a facility (Leveler) to adjust the light of the car according to this change.

As important as this facility is for the driver of the car, it is equally important for the driver of the oncoming vehicles. The leveler eliminates the glare from the road as it shines into the eyes of oncoming drivers.