Tire installation in reverse requires replacement, and when installing tires, it is important to follow the direction specified by the tire manufacturer. The main reason for this is that the design and direction of the tire's pattern play a key role in the normal operation of the vehicle, such as rainwater flow and anti-slip performance.

For tires with side-by-side identification, it is easy to identify in the side of the tire. If the inner and outer sides of the tire are installed in reverse, there are two disadvantages:

1. The vehicle's grip performance will下降, which will cause a decrease in acceleration and braking performance. More seriously, one of the tires may be reversed on the axis, leading to severe accidents due to vehicle direction loss;

2. The tire's side wall is more prone to damage. Some high-performance tires, in order to improve the grip, water flow, and noise reduction, have used a non-symmetric pattern, and the effect of the reverse rotation will be significantly reduced. Some off-road tires are designed to protect the outside by strengthening the design and process of the side wall, and if the tire is reversed, the tire will lose this protection. Generally, most of the ordinary home-use tires have a part of the inner and outer sides, and only a few medium and above-performance tires have this division, which also means that the price of these tires is higher than that of ordinary tires.

It is worth mentioning that the influence of the above reversed tire effects is not easy to feel in normal driving, but it will appear when driving at high speed, such as during a sudden brake or emergency避让. In normal driving, it may cause danger.