For most owners, the spare tire may be one of the most unusual car to object, because of this, doing maintenance, it is often overlooked on the spare tire testing and maintenance. As everyone knows, spare tire, though not common, but often play an important role at a critical moment. The current automotive school, will introduce some of the spare tire maintenance tips to car owners.

Regular testing for wear

Under normal circumstances, the owner of the routine maintenance or before long trips, there are few owners of the spare tire testing, many owners of non-existent spare tire, it is difficult to come in handy at the crucial moment. In fact, the role of the spare tire is essential, especially in high-speed long-distance driving.

Generally, for detection of the spare tire, and the tire pressure is mainly to check for wear and cracks prior to the wear of the tread wear indicator line, the tire 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.

Should be used to adjust the tire pressure

It needs to be reminded that, in order to guarantee the shape and the use of the spare tire, in the tire air pressure is not the same as with a conventional selection during storage. A low-pressure tire is generally between 2.0 to 2.5, and the spare tire is between 2.5 and 3.0. Spare tire air pressure is unacceptable, because the owners no barometer, no way to adjust the air pressure, so after the change a spare tire, find professionals should adjust air pressure to normal use. General pneumatic spare tire hit 2.7 is safe.

Further, the spare tire should not substitute positive long-term use, since the spare tire is often not used, the friction with the ground is relatively small chance, put the spare tire, due to the different coefficient of friction of four tires, different ground adhesion, different pressure , prolonged use of a vehicle braking system will, steering system and suspension system have a certain impact, to bring great traffic safety hazard.

Should be changed regularly

Many owners often encounter such a situation: the car after a puncture want to replace the spare tire, spare tire but found many years after placement, has been seriously aging, it has long been a scrap tires. This is mainly because rubber tire belongs, 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.

Meanwhile, since the main component is rubber tires, rubber and various oil is the fear of erosion. 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. Therefore, try not to put the spare tire and oil together. If oil gets on the tires, should be promptly with a mild detergent to wash the oil off.

Tips: How to replace the spare tire?

1. The car jack the support up slightly, yet before the tire off the ground, the wheel to loosen the fastening nut.

2. After tighten the nut loose, continue to use the jack the car up until after the tire completely off the ground, try to remove the original tires.

3. Replace the spare tire, an orderly diagonal, respectively, all the fastening nut fastened uniformly all good.

4. jack down, tire replacement work ends.