What does "156/150" refer to in the following tyre designation: 315/80 R 22.5 156/150 L?

The designation "156/150" in the tyre specification indicates the load index for both single and twin tyres. The first number, 156, refers to the load index for single tyres, while the second number, 150, specifies the load index for twin tyres. This classification is crucial because it determines the maximum load each type of tyre can safely carry.

According to German traffic regulations, it’s important to adhere to these specifications to ensure safety and compliance on the road. Using tyres that do not meet the required load index can lead to handling issues, increased stopping distances, and potential tyre failure, which poses risks not only to the vehicle but also to other road users. Understanding the intricacies of tyre designations helps in making informed choices for vehicle safety and performance.