CEAT ZOOM D-3.50/R10 51J

3.5

3.5 is the width in millimetres of the tyres cross section.

R

Radial construction.R stands for radial-ply construction.

10

10 inches, stands for the diameter of the wheel that the tyre is designed to fit.

51

51 is the load index i.e. the maximum weight each tyre can carry at full speed.

J

J is the speed rating i.e. the maximum speed for the tyre at full load.