What is the load index of a 305/35XR20 (107Y) performance tire indicative of?

The load index of a tire is a critical specification that indicates its load-carrying capability. For a tire marked with a specific load index, like the 107 in the 305/35XR20 (107Y) designation, it represents the maximum weight that the tire can safely support when properly inflated. The higher the load index number, the greater the load capacity of the tire. This information is vital for ensuring that the tires selected for a vehicle can handle the total weight of the vehicle and any additional cargo, contributing to safer driving performance and stability.

In contrast, maximum horsepower, minimum tread depth, and optimal air pressure relate to different aspects of tire and vehicle performance but do not connect specifically to the load index. Each of these elements is crucial for overall vehicle operation, but they serve distinct functions compared to the load index's focus on weight support.