Do you know what a spare? Full name of the spare tire spare tire is hanging in the back of the car or on the trunk of a car, you may never be less than that of the tire. In most cases, it will be there in silence, waiting for a few thousandths of opportunity to have a bad wheel brothers had an accident, so it can come in handy.

Spare tire is very important for car use, especially in high-speed travel, in order to avoid the journey affected, must pay attention to the name of the spare tire substitutes. Some people may encounter such a situation, in a moving way because of a tire failure caused by not traveling, thinking put the spare tire, but found no long-term "concern" over the spare tire completely deflated air, could not an emergency. Usually left out of the spare tire, tire once being a problem only to find trouble. Therefore, as the owner, you should have a general understanding of the spare tire, if you get in the need to use spare tire when they are not helpless.

First, you know your spare tire is what type of car do?

At present, most cars will be equipped with a spare tire, its specifications will be the same as the original car tire specifications. But the car will use some special color wheels spare tire, small spare tire, spare tire folded, zero-pressure tire of the spare tire, etc. form.

1, full-size spare tire: a full-size spare tire is better understood, is the same size with the car four original tire size spare tire, also typically employ the same with the original wheel rim; full-size spare tire size specifications and other original car four identical tires, which can be replaced with any of a temporary tire or can not be used.

2, non-full-size spare tire: the non-full-size spare tire tread width is smaller or narrower sized spare tire rim, which is usually iron wheel rim, and there is a limit (maximum speed can not exceed 80km/h) traveling speed, Therefore, only as a temporary place of use, and can only be used for non-driving wheels.

3, flat tire: run flat tire is also known as safety tires (run-flat tire), which is what we called "flat tires", literally translated as the industry's "run-flat tires." Compared with ordinary tires, after being flat tire puncture will not leak or leaks very slowly, can keep driving profile, the bead also been fixed on the rim, so as to ensure the car can be a long time or temporarily stabilize travel to the service station. Therefore, the car equipped with this tire no longer need to carry a spare tire, so that the spare tire in another manner invisible hidden on the four tires.

Although the replacement of the spare tire on the vehicle specification has, but I believe that ninety-nine percent of people are in a hurry after a car was anxious to put the whole of China traveled to the specification as early as throw it out the window. Well, give us today to talk about how fast and secure replacement of the spare tire, remember the main points of a rainy day.

Second, the spare tire to use and contraindications:

Many owners use for four tires are concerned, the relevant knowledge examination and four transposition such as tires also have some knowledge, but often neglected the maintenance of the spare tire. To remind the majority of riders Note: The daily inspection should spare tire, do not wait until a tire accident situation, find out the spare tire, spare tire is no longer available.

1, regular testing of the spare tire

Routine maintenance or before long trips, there are few owners of the spare tire testing, while not a professional repair shops also often neglect this. Spare tire and check the tire pressure is detected primarily for wear and cracks before tread wear indicator line to wear, the tires should be replaced as soon as possible. If there are small cracks sidewall, it can not be used over long distances or high speeds, the tire sidewall as thin, high-speed driving prone to puncture.

2, tire spare tire should not be involved in transfer

In stores in exchange for the use of the original tire is a strict requirement, should not be involved in the spare tire is more tune tire. Tire tread itself is in tune weigh different parts of wear and tear, and has not advocated tune about tires, front and rear tire there are different tune wear problems. Due to the different spare tire wear, tire participate tune the security risks will increase.

3, the spare tire should not be long-term use

Spare tire is actually emergency use, not long-term use of the tire. Regardless of wide and narrow spare tire, manufacturers have special requirements of production and use. Spare tire in the car as it is not linked to long-term operation, no wear and tear, so there is no wear and tear of a tire has been worn away and the tires are not the same, using the spare tire in the car itself, there are certain security risks.

User during use, because the car can not run after a number of kilometers, the original tire put into use spare tire. Since the original spare tire and tire production time is not the same, tire aging, hardening, deformation and life are not the same, so the long-term use is unsafe. After the emergency spare tire should be used promptly replaced the original tires.

4, when using the spare tire pressure needs to be adjusted

Spare tire pressure and tire being different. Before using the spare tire, spare tire should be used barometer regulate air pressure. Ordinary low-pressure tire tire pressure between 2 to 2.2, "pressure", and the spare tire is between 2.7 to 3.2 "air pressure" in. First, in order to ensure a high pressure of the spare tire shape, the second is to reduce the probability of the tire at high speed, but can not be prolonged, high speed use. After the owners put on the spare tire should be found in a timely manner professionals adjust tire pressure, the pressure to a safe state (about 2.7 MPa).

5, do not put the spare tire with corrosive materials

The main component of the rubber tire, and various oil is fear erosion rubber. Owners often trunk and storing oil and other lubricating oil, the oil stains, once the tire, the tire will occur inflation eclipse, will greatly reduce the life of the tire. If oil gets on the tires, should be promptly with a mild detergent to wash the oil off.

6, long-unused spare tire should be replaced

Many owners believe that as long as the spare tire has been placed in the trunk not in use, can be "long life", which is wrong. Often such a situation: the owners want to replace the spare tire after a puncture, but found after placing the spare tire for many years, it has been seriously aging, has long been a scrap tires. Because the tires are rubber products, stored too long there will be aging, the aging of the general tire is about four years, therefore, to four years after the spare tire should be replaced.

7, the repaired tire on the rear wheel to use

Some owners will be patched tire as a spare tire, these tires if you want to use again, must be placed on non-driving wheels, generally we drive mid-level and below are the front-drive vehicle, and the front tire due direction of the car more difficult to control, so the repaired tire to put the rear wheels. Further, especially when using compact spare tire spare tire, the vehicle speed control is to be noted, to not more than 80 km/h, preferably under normal circumstances.

Third, how to replace the spare tire?

Vehicles in everyday driving, the tires touch the ground for a long time, prone to natural wear and tear, unnatural damage, and other man-made damage, when the process of driving the tires damaged, how to deal with? Here we explain the method to replace the spare tire autonomous, so that when an emergency situation, we can respond in a timely manner.

First we have to find the location of the spare tire, according to the different models, the spare tire usually placed: the trunk under the floor; hanging in the rear below; fixed in the trunk door.

1, first open the rear vehicle tools and spare wheel removed lorry tool comprising a jack with a wrench.

2, with a wrench to loosen the bolts on the tire. First unscrewing counterclockwise direction, the clockwise direction to tighten. Counterclockwise to loosen the bolts of the tire, since the wheel bolts screwed tight, so we can use the power of the body;

3, support from the jack. After loosening the bolts one by one, can be used to jack up the vehicle locally rise. To pay attention to when using the jack: car jack placed on both sides have a lot of bottom slot, be sure to put the jack in the slot to avoid accidents;

4, remove the tire. After the support from the jack, loosen the bolts in order to easily unscrewed, after which they can win the whole tire, which means that tire removal successfully completed;

5, the installation of a spare tire. Before installing the spare tire, it is best to remove the tire placed under the vehicle causing the vehicle to avoid dislocation of the jack with three unexpected places. The most strenuous install the spare tire spare tire and wheel is how to align the mounting bolts, lift the car is too high, it is necessary to lift the spare tire, too much exertion, preferably with the help of others, if a person with a leg or operation of the proposed foot against the spare tire to prevent displacement.

6, the fastening bolts of the tire. The spare tire is aligned on the bolt or a bolt eye means, and a first bolt torsion and twisting all at once, the final tightening with a wrench little bit; when the bolt is screwed in a clockwise or counterclockwise avoid not sequentially screwing the bolts , but in order to tighten the bolt to the diagonal. Such tires is fixed five bolts, tighten our first four diagonals manner, after the first five and then tighten the bolt, and preferably the number of turns of each screw is screwed consistent when tightening the bolt, to the the bolt is to ensure uniform force.

7, to remove the jack Panasonic. After five bolts, we can remove the jack (under the mat in the car while the tires removed), the vehicle back to the ground.

8, after which that rely on the physical strength of each screw is tightened when removing a tire in accordance with the same manner in accordance with the diagonal. After the turn tighten the spare tire replacement work can be declared done.

9, received a good tool, back into the trunk and the back tire.