From the code written on the tyre, we can know the type, size, weight bearing capacity, speed index etc. of the tyre.
Tire width is measured in millimeters. For example, a 195/55 R16 tire has a width of 195 millimeters, a height of 55%, and a rim size of 16 inches.
The load index of a tire tells how much weight the tire can carry. Load index is a number that ranges from 80 to 270.
The speed index of a tire tells the maximum speed at which the tire can run. For example, a tire with a V speed index can run at a maximum speed of 240 km/h.
Tire air pressure is important to its safety and performance. Tire pressure is determined according to the size of the tyre.
See separate slide..