112T is a tire load index and speed rating. The load index indicates the maximum load a tire can carry at its maximum inflation pressure. The speed rating indicates the maximum speed at which a tire can safely operate.
In this case, 112T indicates that the tire has a load index of 112, which means it can carry a maximum load of 2,469 pounds (1,120 kg). The speed rating of T indicates that the tire is safe for speeds up to 118 mph (190 km/h).
