Why not just replace one tire?

It is easy to run off when the patterns are mixed
The tire pattern not only directly affects the heat dissipation and drainage performance of the tire, but also relates to the handling performance, quiet performance, comfort performance and the most important safety performance of the tire! If only one tire is replaced, and a tire with a completely different pattern is replaced, then the mixed pattern will cause the vehicle's braking and grip performance to decrease. Especially in the daily sudden braking, inconsistent patterns can easily cause the vehicle to deviate, so it is very dangerous.
In addition, due to the different pattern, its performance in wet braking and handling is also significantly different. Inconsistent wet performance will cause the tires to have unbalanced grip, increase the risk of sideslip in rainy days and even cause the vehicle to roll over in rainy days. Therefore, when changing tires, tires with the same pattern must be used on the same axis.
Reversing inside and outside is very dangerous
Pay attention to the two English "inside" and "outside" on the sidewall. Since most of the current tires have an asymmetric pattern, pay attention to the inside and outside when installing, and pay attention to the installation direction of the tire.
At present, more and more tire patterns on the market are asymmetrical patterns, that is, the patterns on the left and right sides of the tire tread have different shapes. One of the benefits of the asymmetric pattern is that it increases the landing pressure of the outer pattern when turning, which greatly improves the high-speed turning performance and complements the wear resistance of the outer pattern.
If the inner and outer sides are installed incorrectly, resulting in inconsistent pattern directions, it will cause increased tire wear during driving, resulting in partial wear of the tire. In addition, the control performance carried by the outer tread design of the asymmetric tread pattern will not be able to be effectively exerted because of the reverse installation; the reverse tread pattern will also reduce the grip performance of the tire tread, causing the vehicle to deviate. Therefore, the harm of installing reverse patterns is as great as that of different patterns on the same axis.
Some tires with single guide pattern do not indicate the inside and outside on the sidewall, but arrows are used to indicate the rolling direction on the sidewall, and the installation error can be avoided by finding the arrow.
Installation taboos to keep in mind
In addition to the installation rules for tires with the same brand, the same pattern, and the same specifications, it is also necessary to pay attention to whether there are tires with special marks of MO, RP, and DT on the sidewall tires of the unreplaced tires in the coaxial tires. These special marks are often the custom tire marks of some tire brands, or the original logo, and their patterns are usually special, so they cannot be mixed with ordinary tires. You can only replace all tires together, or at least coaxial replacement, but absolutely Cannot be replaced individually.
Before installing the tires, the tire worker must strictly implement the dynamic balance before installing the new tires on the vehicle for use. During the inflation phase, it is necessary to inflate according to the standard air pressure to ensure that the tire pressure is normal. Finally, remind customers of the daily driving speed limit according to the tire speed rating to ensure their future driving safety.
Tire installation is not just about installing it. Before installation, you must read the specifications on the sidewalls to ensure that you install the correct tires for the owner. You must also install new tires correctly to avoid subsequent troubles!