ARAMIS SureGripp 3 R18 42P

3

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

18

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

R

Radial construction.R stands for radial-ply construction.

150

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

P

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