In the past few days, when surfing the Internet, I accidentally saw a car owner complaining that the spare tire in his car suddenly ruptured, resulting in his inability to change to an emergency, and he was forced to seek rescue. It's not uncommon for car tires to break accidentally, but it's rare for a spare tire in the trunk to break.
The tread of the spare tire is damaged and cannot be used in an emergency
According to the story shared by the owner: due to the accidental nail leakage of the tire, he originally planned to change the spare tire by himself, but when he took out the spare tire, he was dumbfounded, and found that the tread of the spare tire had been cracked, and part of the rubber of the tread and shoulder had completely fallen off, and the cord below was also completely exposed.
Image source: Ip Man 168
According to the owner, the vehicle has been used for 7 years, and the spare tire has been used 3 or 4 times in 7 years, and it will be cleaned up and put back every time it is used. From this reason, it can be judged that the damage of the spare tire is not only the cause of the tire itself, but also the condition may occur during use.
As we all know, many fuel vehicles have spare tires, and the role of the spare tire itself is used for emergency response. Therefore, for the sake of space in the car, spare tires are generally not full size, resulting in the size and structure of spare tires that are very different from ordinary tires.
Since it is only used for emergency use, the spare tire also has a clear upper limit on the speed and load capacity of the vehicle used. The maximum speed of a non-full-size spare tire cannot exceed 80km per hour, and the driving distance cannot exceed 100km; The maximum speed of a full-size spare tire cannot exceed 100 kilometers per hour, and the driving distance cannot exceed 300 kilometers. Moreover, the spare tire has higher tire pressure and smaller ground contact area, which is destined to be more prone to wear and wear than normal tires and have a lower life.
So we speculate that the owner's spare tire may have been worn or damaged to a certain extent during previous use, and then the rubber has aged for up to 7 years, and the tread rubber is more fragile, which eventually leads to the tread peeling.
Spare tires also need to be inspected and replaced
The spare tire of the car is a part that many drivers may not have used until they changed cars. In fact, the spare tire should be taken out regularly for inspection, especially after 4-5 years of old cars, the spare tire should be maintained every year to confirm the tread situation, whether the air pressure is sufficient, to ensure that the spare tire can work normally in an emergency.
If the owner of the spare tire has been used, he should carefully confirm the use of the spare tire after using the complete tire, and replace it in time if it is found that the wear and tear are serious and the tread is damaged. At the same time, it should also be noted that the tire pressure of the non-full-size spare tire needs to be hit to 4.2 bar to meet the design requirements, which can also prevent slow air leakage for long-term storage.
Write at the end
Some seriously aging spare tires should be replaced in time, because there are not many spare tires on the market that can be purchased through formal channels, so it is recommended to return to the original 4S store to buy a replacement for the replacement of spare tires.