See also:

Load index
In addition to the load bearing index, the load index may also be imprinted on the sidewall of the tire. This specifies the load bearing capacity more precisely. ...

Tire size designation, load-bearing capacity and speed rating
1. Tire width 2. Nominal aspect ratio in % 3. Tire code 4. Rim diameter 5. Load bearing index 6. Speed rating Tire data is vehicle-specific and may deviate from the data in th ...

Tire labeling overview
The following markings are on the tire in addition to the tire name (sales designation) and the manufacturer's name: 1 Uniform tire Quality Grading Standard 2 DOT, Tire Identification Number ...