1. It is forbidden to mix tires of different sizes, all tires should be of the same size;
2. It is not necessary to mix radial and bias tires, all tires should be radial or bias tires;
3. It is not necessary to mix tires with different tread patterns, such as mixing real-time road conditions and summer tires;
4. Do not choose a tire that is different in size from the original tire. The replacement trailer solid tire should have the same size.
![](https://hqcdn.hqsmartcloud.com/topsolidtire/2022/02/09/be.jpg)