Tire as a kind of material, not like a car engine oil and filter change more frequently, but in the use of a certain time, also need to check the replacement in time.First of all, the cars per ten thousand kilometers is the front and back should be according to the diagonal switch position, because the family cars are basically the front wheel drive, front wheel is responsible for steering and responsible for driving the vehicle, thus cause the wear degree of the tire are not identical, before and after and the wear of the tire and the vehicle weight, is the distribution of tire transposition of great help to uneven tyre wear.Specification, structure, wear-resisting degree different tires on the vehicle handling and stability performance has a great influence.In addition, the tyre transposition in professional repair station, it is best to do it again after changing the tire four-wheel positioning, although this is not primarily for the maintenance of the tire, but for the motion of the vehicle is still very good.Tire wear to a certain degree is a must be discarded, usually in the tire wear mark on the surface of the show should be scrapped processing, ordinary tires in 80000 km or so would be to scrap.However, many people think that only need to replace pattern polished, actually otherwise, when the road is slippery the long-term use of tyre wear serious car, the steering wheel and brake failure almost completely, while the vehicle is easy to produce sideslip wandering caused the accident.If the fluster step on the brake, it is very dangerous, and the right thing to do is supposed to be holding the steering wheel, gently step on the brake to reduce speed.In addition, have you ever been went for replacement of spare tire?Don't try so hard, in the spare tire also to have certain skills:In spare tire never conducted on uneven road or ramps, removing the tyres will be change a tire tire braking piece placed in the outer edge of the diagonal tire location, to prevent the car move.Hang out pull hand brake.Use wheel screw wrench, turn the screw rotation about a half circle to the left, to the top of the car with a jack, after confirm the correct position of the jack, to replace the tyres.Lock nut and screw tight, put down after one thousand jins tire touchdown, again according to the diagonal form one by one to further lock nut.In after, to check whether the pressure of the tire balance.