1. Tires should be fixed on corresponding rims of the same model, requirements and size.
2. The same axle should be assembled with tires of the same Specifications, brands, size, ply rating, atmospheric pressure and patterns.
3. All tires of vehicles should be replaced when replacing with new ones. Otherwise, new tires should be fixed on the outer side of the front or rear axle.
4. When simultaneously fitting the two tires of the rear axle, the rotation marks of tires should point to the forward drive direction.
5. Tires should be inflated to standard internal pressure. But on roads of 4% higher camber, coaches can have 0.2-0.3kgf/cm3 lower than standard internal pressure in front and rear inside tires.
6. The load of tires is subject to the max load stipulated for single tire. No overload is allowed. And the load should be well distributed.
7. When changing position, all tires should be changed simultaneously. Be sure not to change the original drive direction of tires.
8. When binding tire chains, two sides should be bound. After passing through slippery road, the chains should be removed. Too tight or too loose chains may damage the tire side and the surface of the tire.
9. Regularly check the tire. When rip or hole are found, they should be immediately mended in case the damage will be expanded.
10. The external tire should be fixed on standard nms, And keep the rim edge(or the Grommet)in good condition. Regularly remove rust and add antirust oil.