happened to be changing the spare tire of my friend's car. During the process of changing the spare tire, I encountered some small difficulties. Let me tell you about them.
Actually, changing a spare tire seems to be quite simple. Let me tell you, most drivers have never done it before. Even if it is your first time, if you have no experience, it is easy for you to have troubles, so I will tell you what to do. Let’s talk about some of the problems and tips encountered in .
Precautions for inflating spare tires
First of all, let’s take a look. In order to save space in the trunk and reduce weight, many cars are equipped with compression spare tires. When not inflated, they are very thin.
The rubber is squeezed into one layer, which means that if you want to use such a spare tire, you must inflate it. If not, the spare tire cannot be used.
But during the process of inflating, I found that maybe 90% of the drivers would use an air pump to inflate directly into the opening.
But let me tell you, if you use an air pump to inflate it directly, the car air pump basically cannot handle this.
Why? There is a valve cover on the spare tire. The cover of
is different. It has a long, concave shape on the front. This concave shape is used to hold the valve core , so just unscrew the valve core.
When inflating, since the tire itself is a compression tire, it requires a lot of force to open.
If there is a valve core resisting this place, then the valve core needs to be pushed open first to pump air. After the valve core is pushed open, the resistance in this place will be much greater.
And if you try to pump it inside, your air pump may not be powerful enough and it won’t pump at all.
Because it is a compression tire, if you leave this tire open for a long time, it may deform in some places and become slightly flat.
So when inflating, if your air volume is not enough, or the pump power cannot keep up, and your valve and valve core are not unscrewed, then you will not be able to inflate at all.
So at this time, you need to use it to screw out the valve core inside. After is screwed out, pump air into it.
And during the inflating process, if there is slight leakage of air anywhere, you can press it with your hands or kick it with your feet to make it close for a short time. After it is closed, it will slowly heal. Open.
Safety issues of the spare tire
The second question involves the safety issue after the spare tire is replaced. This aspect must not be ignored.
First of all, the spare tire is a spare tire, especially a compressed spare tire like this, which is obviously different from a normal tire. It bulges out a lot.
And there are many logos posted on the iron wheel hub. Generally, there will be a MAX. This Km/h represents its maximum driving speed, which cannot exceed 80 kilometers per hour.
And let me tell you, if a tire blows out on the highway, replace it with a spare tire, even if your speed is relatively slow.
Let's take a look at the tread of this tire. Its tread is a smooth tire, so the grip of this tire is completely different from your patterned tire in all aspects.
So generally speaking, if is running at low speed on high speed, or running a little further, it is recommended to put the spare tire on the rear wheel, and then change the normal tire on the rear wheel to the front.
In other words, if you change a spare tire, you actually need to change two tires. The operation of will be relatively more difficult than , and as long as there are conditions for repair, the spare tire must be removed and not used again.
First, in fact, this kind of compression tire is not cheap. If you use it for a long time and it wears out, you can buy another one. It is no cheaper than your regular tire. After taking it off, deflate it and put it back, and you can continue to use it next time. use.
The second most important thing is the spare tire. It cannot be used for a long time because the safety factor of is lower than other , especially if it is a non-full-size spare tire like this, because its pattern is different from other tires. It's different, so is not safe to open .
Prevent collapse during tire replacement
Finally, during the tire replacement process, it may happen that your tire has not been changed for a long time, and one ring of the tire is still stuck to the middle disc, making it difficult to remove the tire.
If it cannot be removed, usually uses a jack. After is jacked up, you can stuff the spare tire under the car to prevent the from collapsing. Then you can kick it a little with your feet, but don't kick it too hard.
If you still can't get it off by kicking it with your feet, usually you will use a wooden stick or wood to directly punch around the steel ring. After hitting it a few times, it will slowly loosen, and you can take it off after it is loosened.
But during this process, you must pay attention. During the kicking process, it will shake. If the jack is not firmly supported, it will collapse, and once it collapses, it will be useless.
Therefore, be sure to put the spare tire under the car to prevent it from collapsing. If it collapses, there will be a spare tire there to hold it up so that the entire front will not be damaged.
The above is this time. During the process of changing the spare tire, I especially need to emphasize some safety precautions.
