How is the traction grade determined?

The traction grade is determined by testing the tire's performance on wet asphalt and concrete. This assessment helps measure the tire's ability to grip the road under specific conditions, providing critical information about its safety and performance characteristics.

The traction test assesses factors such as stopping distance and the tire's ability to resist hydroplaning, which directly correlates to wet weather performance. Higher traction grades indicate better performance in wet conditions, which is essential for safe driving.

Other options do not reflect the actual method used to establish traction grades. For instance, factors like color and design, user feedback, or design specifications do not provide objective data on how a tire performs on the road, especially in adverse weather conditions. Therefore, rigorous empirical testing remains the most reliable means of determining a tire's traction capability.