Vredestein Quatrac 5 195/55 R15 85H

15

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

R

Radial construction.R stands for radial-ply construction.

515

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

H

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

195

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

55

55 is the Aspect Ratio, it is the ratio of the sidewall height to the cross section width.