The wear index you mentioned can be found on the sidewall of the tire.

UTQG tire quality is of uniform grade (three T marks), such as tread wear 160, traction A, temperature B,

Tread wear 160: Its wear index is 1.6 times that of "standard tire".

Traction A: the traction of the tire (generally divided into ABC three grades, but the highest is AA)

Temperature B: the heat dissipation (heat resistance) performance of the tire (divided into three grades of ABC, with A being the highest).