What is 99y in tires?

In the context of tires, "99y" refers to a specific tire size and load index. The "99" indicates the load index, which means the tire can support a maximum load of 775 kg or 1,709 lbs. The "y" denotes the speed rating, indicating that the tire is rated for speeds up to 300 km/h (186 mph). This information helps consumers select the appropriate tire for their vehicle based on load capacity and speed requirements.