The motorist must change tires twice a year. At the end of each year, you have to install winter tires, and when the cold and snow leave, you have to put summer tires on the wheels. At the same time, some citizens, wishing to save time and money, change wheels on their own, without the help of specialists. Unfortunately, very often people who are not well prepared make numerous mistakes. Now we will focus on the most common and at the same time pernicious miscalculations.
1. Rely entirely on the jack
To hope that the jack alone will withstand any load is the height of naivety. Moreover, a very "dangerous naivety". In fact, a jack is not always capable of providing a truly reliable fixation of the car. Needless to say, if something happens to it (the jack), the car that has fallen down can cause serious injuries to the driver and even kill him. Therefore, you should take care of additional measures. At least put a spare wheel under the bottom of your "Swallow", just in case.
2. Precarious position
The second important point, which directly follows from the first. Even if the work on changing a wheel is carried out in a workshop where the floor is perfectly flat, it is necessary to install stops under the opposite wheels. They are necessary in order to exclude the possibility of the machine rolling back when the body is lifted from one side. It is also necessary to put the car on the handbrake before starting work. And of course, all such work should be carried out on a special site.
3. Savings on bolts
Saving on wheel bolts is like saving on your own health. Never fix wheels with fewer bolts. If you do this, then the load on each individual bolt increases significantly. As a result, the breakage of such an attachment becomes only a matter of time. In addition, you should not save on the quality of hardware, and most importantly, you need to carry them out timely replacement in the event that a bolt begins to deteriorate under the influence of natural factors.
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4. Do not use dimes and eyelets
Today, many cars on their underbody have a special reinforcement with durable metal around the perimeter. It is done in order to exclude damage to the body when using a jack. In this case, next to each wheel there must be a special groove for the working rod. Its use should not be neglected, especially on used cars. If rust has formed somewhere, then the bottom in a place without reinforcement may simply break. All of this will end with expensive repairs at best, and at worst with an ambulance ride.
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5. Incorrect tightening
There should be more than just the right number of bolts in the wheel. Among other things, each must be tightened properly. First of all, the hardware is profitable, and only after that they are tightened according to the criss-cross principle. This simple method will allow you to achieve the most reliable wheel fixation. At the same time, one should not "persist in tightening to madness", since this will inevitably become the reason that the bolts will simply stick together and subsequently it will be impossible to unscrew them.
If you want to know even more interesting things, then you should take a look at 7 cars from the 90s that are still in demand and do not fail.
A source: https://novate.ru/blogs/070320/53694/