It indicates that the tread pattern is a winter one, i.e. it is specifically designed for driving on Mud and Snow.
Made in ...
Indicates the country in which the tyre has been manufactured.
Max Load
This writing indicates the maximum load in lbs and the relevant cold maximum pressure in PSI in conformity with the safety standards in force in USA, Australia and Canada.
ME&S
Company developing Web Based Training.
Mounting balcony
It is the part of the rim which is in close contact with the bead cavity from the air sealing ridge of the bead itself. It counters the thrust of the tyre bead under pressure.
The apex of the balcony is folded and curls outwards according to curving radii which correspond to certain rim profiles.